Hi there,
First of all, I wanted to let you know that I am really sorry you're going through this. I am not a religious person, so I may not be able to understand fully what you're going through and can't imagine how difficult this must be for you, but I do empathise with you and I understand how hard it is to struggle with your sexual/gender identity.
You've made it very clear that you've tried to repress these feelings and nothing has come of it. I, personally, have never heard of anyone managing to 'stop' being gay. Even people who go through conversion therapy have their feelings resurface over time in every examples I've read - and are then left literally traumatised from being put through this 'therapy' and have nothing to show for it. These feelings and attractions aren't going to go away - this is who you are and there is absolutely nothing wrong with that.
What you need to remember is that being Muslim and being gay are not mutually exclusive things. I may be speaking out of term here, so I sincerely apologise if I've misunderstood your (or anyone else's) faith, but from what I've read and experienced, Allah is a being of love! From excerpts I've found, time and time again, it is said that Allah loves those who love him and do good by others. Don't you think that an all-powerful and merciful being would want you to spread love by being yourself and settling down with someone you truly love, regardless of their gender? If you continue to bury your feelings, you'll only become resentful (particularly towards any female partners you may have), and this could lead to you hurting people because you are hurt.
You falling in love and being in a happy, compassionate relationship with a man hurts no one. Do you think Allah is going to focus on you being in a consenting gay relationship when there are people out there abusing, raping and murdering innocent people? You wanting to pursue a happy relationship is only a positive thing, and I think Allah would be proud of that.
And remember, you're not the only one feeling this way! I, personally, know three LGBT+ Muslims. They all still love Allah and are - in my opinion - good Muslims! You can find a community of gay Muslim people on Imaan (a community for LGBT Muslims in the UK). I'll pop the link here - imaanlondon.wordpress.com
Just a final note - you mentioned you have 'felt like a girl'. Is there any chance you could be transgender? It might be something to think about.
Again, I'm so sorry you're going through this, and I hope you find the best solution for you soon. If you ever need to talk about this, you're welcome to message me privately on here!
Good luck!
- Gee