If by "something else" you mean "oh no you have to have sex to survive!" then get over it. It could be a lot worse, and besides, it's not like sex is going to hurt you. It's all a part of growing up, and besides, I bet you and your precious senpai aren't as innocent as you're trying to make it out to be. I was in high school once too, remember.

Though I guess if you need someone to teach you all about it - you know, someone with more experience - I could maybe convince my mun to app me there.