How do you get a ?

... This is the biggest question I've ever asked but how can I make a straight or at least bi ok so look I like this girl Allie but she's a big time I mean tho I'd like die for her she's the most amazing person I've ever met but here's a big roblem she's Been dating this one girl for 5 years! idk wtht to do or say but I love her and I wish I could tell her how I feel but she hates men she's never had a bf only this one gf and they've had a lot nd all but idk I need help and here's a question for a have u ever even met a guy tht maybe loved u so much more than anyone else could have u ever met a man tht could maybe change ur uality but s r probably way too pigheaded to stop and listen to a man anyways just like gays won't do it for a straight women but is it even possible for someeone to change someone I don't have an ego or sumn like most ppl say I will admit my isn't some gift I'm broke azz virgin to but I do love this girl very much and if one could help me tht would be awesome plz don't get mad I'm just a love sick fool.