If your girlfriend is a muslim, would you convert to Islam just to get married to her?

OFCOURSE! no matter what rule it has, i'll sacrifice everything for her.

Yes. But I'm not so sure. There are too many rules i'm not sure i would be able to keep up...

Maybe, I might try but I don't think I'll follow any of the rules even after I convert

No, it's not worth changing your whole lifestyle for 1 girl. there a many million more girls out there.