Something off about her hair. She was still fixing her clothes. She began to ask about notes from way back about Noble Gases. I gave them to her."I go... to ask... why is your guaranteed grade in danger? I can take my final and suck and still get a B, at least," I said."Well, not everyone has perfect lives."I was slightly taken aback."Relax, it was a little joke," I said, putting my hands up."Sorry. I guess it was the T.A. (that asshole) talking." Haha. I was exactly where you were now..." I got. Sandra too had filled out some and her breasts were larger also. I thought it might have been something to do with Charlie sucking on her breasts, but wasn't sure. You see I had also been sucking on her breasts. We had also had a lot of sex, especially while Astrid was recovering, and we hadn't slowed down any afterward. Sandra was all that I could want in a young girlfriend and more. She was also a willing babysitter when Astrid and I needed to be alone. At other times she was a willing. If the hottub was private we would have kept going there but since we could have been interrupted at any moment, I suggested we take this threesome back to my unit.Thankfully nobody joined us in the elevator. Although we had towels around our waists, the towels couldn’t hide the three hard cocks that were present. And, the conversation might have made any unsuspecting guest blush a little bit. The guys asked me if I liked being Spit Roasted. Who did they think they were asking? Of course I like. I just love the feel of lots of sperm in my pussy. I live for that! Don't get me wrong, I've sucked lots of cock and lots of guys have cum in my mouth. I know the guys like it and I usually only do that while someone else if fucking me. I've been fucked in the ass but don't like that nearly as much...but again it is when someone else is fucking me. But I try my best to get them to fill my pussy with their cum." As she told me all of that, she was stroking my dick and it was starting to get.