As my cock moved closer and closer to full erectness, I expanded my efforts to begin running my hands up and down Evas smooth back and cupping the firm globes of her ass as I busied my lips and tongue on her bust. Between what I was doing to her and what she was doing to me, it wasn't long before both of us were ready to get things moving (no pun intended).
With Sis on top of me and my stiff cock buried in her, she was in position to take the active role by finally lifting herself a little way off my manhood and then settling back down on it with a soft moan of pleasure. A few moments later, she did it again, only rising a little higher. Several more such efforts followed, each one resulting in her letting a bit more of my erection slip out before she settled herself down onto me again. Once she was letting nearly my entire length escape, she readily got into a slow but steady rhythm of self-impalement that clearly pleased her, as evidenced by a flush that developed on her face and shoulders before gradually expanding to the upper slopes of her breasts.
I'd gotten Evas nipples standing tall and glistening with my saliva when she took them away from me by sitting up so she could slide herself up and down on my shaft more easily. With her breasts out of play for my lips and mouth, I had to content myself with simply using my hands — a sacrifice, to be true, but one I was willing to make.
As I caressed Sis' breasts, I happened to look down to where the two of us were joined. Two things caught my attention: first, I could see a trace of blood from Evas now-defunct hymen. It crossed my mind to say something to her, but then realized that she certainly wasn't behaving like it bothered her.
The second thing was the sight of her labia bracketing my penis. They were visibly longer than I'd ever seen them before, and were shiny with the overflow of her oils — as was my cock. As Eva raised herself over me, I watched her delicate inner lips being pulled out slightly as they spread her female lubrication along my length, only to all but disappear when she again filled herself with my manhood.
As I watched her go through several such cycles, the sight aroused me tremendously and made me even harder. Before I turned my attentions back to her bust, I thought that I should get her to look at it, too, knowing that she'd find it as erotic and exciting as I did. Until that opportunity presented itself, however, I was determined to do everything I could to please and arouse her.
Returning my focus to Evas lovely mammaries, I set about doing all the things I knew that she liked: softly caressing them from base to peak, cupping them as I used my thumbs to toy with her nipples, giving them gentle squeezes, and even rolling her erect nipples between my thumbs and forefingers. I wasn't just limiting my efforts to her breasts, either; I enjoyed running my hands over every part of her that I could reach.
As Eva got more and more comfortable with moving herself up and down my manhood, she increased the speed with which she moved. It didn't take much longer before she was in nearly constant motion as she slid herself up and down my stiffness, faintly glistening with the effort of her movement and releasing a variety of pleased and aroused noises. I chanced a glance over to where Charlene was sitting in Sis' chair, and saw that her eyes were locked on the sight of my glistening penis alternately being concealed and revealed by Eva's womanhood. Charlenes breasts were visibly tight, their areolas puckered and her nipples standing tall and proud. Even as I was looking at her, I saw her bring her feet up and rest them on the edge of the chair and spread her legs; a moment longer, and she hand one hand between her thighs, alternately caressing the enlarged clitoris at the end of her shaft and slightly dipping the end of one finger into her vaginal opening.
When I looked back at Eva, I could see that she'd developed a distinct blush that extended to the upper slopes of her breasts; the peaks of those delightful orbs were rotating in opposite directions in small circles — a sight that fascinated me.
Entrancing as Evas breasts were, I soon noticed that she was starting to pant slightly from her efforts.
Ready and willing (!) to become a more active partner in our coupling, I got my hands on her hips and applied a gentle pressure until she eventually stopped her movement over me. When she looked down at me, I explained "You look like you're getting a little tired. How about if I'm the one to move, now?
You can stay there, or we can change positions…"
It took her a second to decide before she told me "Yeah, I'd like that… I want you on top, making love to me…"
She let me pull her into my arms, and as I hugged her, I softly told her "I want to make love to you, too."
When she sat up again, I could see from her expression how much my words had meant to her. Only after she'd settled herself onto me as far as she could and held herself there for several seconds did she raise herself up enough to let me slip free of her intimate embrace. With both of us free to move, it took only a few seconds for us to get our positions reversed: Sis laying on her back with her knees pulled up and her legs spread wide. Kneeling in front of her, I had to take a few moments to look at the sight she presented before telling her "I've always loved you, and thought you were pretty and sexy; now, seeing you like this… knowing that you love me enough to share yourself with me… it makes me love you even more. Not because of the physical things we've done with each other, but because of what they represent — the love and trust we have. I really do feel honored that you'd want your first time to be with me, and that you would have enough confidence in me to believe that I could make this a good and happy-making thing for you. So I want to make sure and tell you: I love you, too, as much as you so obviously love me; and I'll do my best to be worthy of what you've given me of yourself."
Eva started to tear up a little bit, and I was afraid I'd said something wrong until she told me "Thank you, Billy. I do love you, just as I know how much you love me."
With that, I moved my body over hers; and the two of us shared a deep, loving kiss. When it ended, I looked into Sis' eyes as I got the head of my cock positioned against her opening, and began to press myself into her. In return, Sis kept her eyes on mine as she tried to open herself even further to my entry. It took only a single steady slow thrust to fill her with my stiffened member; I saw her eyes widen slightly when she felt the tip of my penis touching the deepest part of her sheath while her opening was clenched around the very base of my manhood. Her eyes closed and she released an impassioned moan when I continued by gently bumping her exposed clitoris with my pubic bone a few times.
When I moved to start sliding my cock back out of her, Eva responded by opening her eyes and lifting her hips as best she could to try and keep me inside her for as long as she could. Only the head of my penis was still inside the tight ring of her entrance when I remembered that I wanted her to see what it looked like when we were mated. Holding myself still, I told her "If you can look down between us, I think you'll like what you see…"
Her curiosity piqued, she did as I said by holding herself up on her elbows so that she had a clear view between our bodies — and the area between her smooth thighs. Knowing that she was watching closely, I slowly and steadily eased myself back into her as I heard her first gasp, then moan softly as I embedded myself in her once again. When she started to lay back again, I cautioned her "There's more to see…", and she didn't delay in getting positioned to resume her observations. Once I'd reversed direction and begun sliding out of her again, she softly muttered "Dear god, that is so sexy to watch… I never thought it could look so pretty and sexy at the same time…"