Would it be really weird to marry a woman that i do not love romantically, but am in love with?

okay, so my best friend is a woman and i am in love with her. NOT romantically, but more of like an "I love you as a person" way. We LOVE each other. Seriously, i would die for this girl. She is smokin hot, hilarious, weird, fun, and i know that she will be a really awesome mother. BUT I am gay. Well i am pretty sure that i am. I can't really know for sure, but its a possibility. anyway, we have always joked of getting married but the other day she was like seriously i will marry you. and i have always given it some thought, because my parents would not accept me being gay and i don't care, but it would be nice just to have someone that i love to marry. So i talked to her and she really wants to get married. Money will not be a problem, so it's not like we will have a dirt poor family. Also we want kids. We have had but that was when we were 16. Now i wouldn't want to do that. So, would i just do artificial insemination? Or we could get a surrogate because she doesn't like the idea of being pregnant. So yeah. That is what might happen. Does that sound really weird? OH and we have agreed to sign a pre-nup so if we fall in love with someone then we can always divorce really easily. Please express your opinion. Seriously i want to hear advice from someone unbiased.