"Virgin-kun" lost it (his virginity) ... LIKE A BOSS (the Lucky Bastard). And as for Yui, despute her initial misgivings ... Hey Mikey I Think She Likes It (and her new sex-friend, too).
Haha, it was kind of obvious that the guy she said 'isn't worth anyone's time' would be her partner. Kind of like tempting Hentai fate the moment she said that. Also because her friend pretty much pulled one over her, so to speak.
But I have to say, he's quite a nice guy. He bought juice for everyone, and even got up to go pay the fee for everyone despite them leaving him behind. And for her, too.
Great ending though. Well hey, he completely exceeded her expectations, and she seems perfectly happy to have him as her partner for at least awhile longer. Considering her earlier attitude, I can see why it's tagged as tsundere. Not bad at all.
I feel like an interesting thing they could have shown was the other girls and the other guys, like maybe they're hunks but not as good as our protagonist in the sack, or something?