Ive fallen in love with a girl and want out help?

So I fell in love with this girl and want out. She's deeply in love with me and wants to spend the rest of her life with me and the feeling is mutual for me. She is gorgeous and is an angel but the problem is I hate falling in love. I hate the uncertainty, wondering if shes gonna cheat or loose interest or is only interested in my good looks or sex or any other shallow ish. love is nothing magical, just chemicals and hormones in the brain so there should be a way to control this feeling. I need tips on how to fall out of love with this chick. Its a bittersweet feeling and I don't want it. And trolls call me a pussy fag or wtvr Idgaf. All the serious people please give me tips on how to fall out. Thank you