Found this game from Steam. It's called "High School Romance". a familiar situation where a boy gets into a fancy school not realizing that it's a all girls school. there are several endings that you can experience. It's about $10 to buy.

http://store.steampowered.com/app/398100/

I'm going to see if I can find it somewhere for free. I may not be easy but I'm still cheap. lol
This does look pretty good. Here is a link for a youtube video about it.

https://www.youtube.com/watch?v=rhKv3de_suA

Jessica Marie