Well, I don't know what to think about this one. I can't tell how much she "studied" in between their spat and when they mended fences, but I hope she realized she gambled a lot with the cheating and would be better off fidelity-wise with a different tutor. At least she did want to stay with her boyfriend but being so weak-willed and egocentric will naturally doom the relationship. Ok, that's all of my "Dear Abby" act.
"You know as well as I do it never leads to us actually studying"? Well...That's fine too, isn't it? I'm sure you'll still do well, it's Hentai after all.
That ending though. Yeah...I think that they both ended up studying rather different subjects.