Re: I'm a catholic guy and in love with a muslim girl
If you are in love, which I can tell that you are - I would advise not to follow what others say or religion as for a matter.
My brother faced the similar situation as you are expericing now - his then GF was Catholic but he never forced her to change the religion. She's still a Catholic and my bro is a Muslim. They've a little girl together and decided that once she reaches 18 - they will let her decide which religion to chose/follow.