I don't know man, when I was in college my classmates were boyfriend and girlfriend and they broke up cause......... She was dropping out and she said, "before I leave campus I want to fuck as many guys as I can. You coll?" seems its a common thing.
that`s girls for you! every guy she fucks its a credit she can redeem later to bum a cigaret some cash a ride help with moving and stuff like that!
when in a relationship its not cool but when there is a deadline on how long she has to harvest those credits and get some pleasure out of it and there is no hammer of no marriage in the end to strike her down since they are breaking anyway... well she is going to try them all and discover her favorite ice cream flavor!
besides they are now college students but later on they will be lawyers and doctors and engineers so good picks to owe you favors, particularly the ones who are dating currently and will marry their girlfriends... "hey fucker remember when you cheated on your current wife in college? i need a letter of recommendation for this job so get to writing it down and maybe i will give you another BJ or else perhaps i have to send a dm to your wife with the pics me and your dick took at that time!"
--edit---
almost forgot! Sasha is perfection!