Honey, the only way to go is transitioning. There is a woman inside your spirit, heart and soul. Hiding her will not make anything better.
I tried to hide the man inside me, and live life like before. I would cry daily and couldn't look myself in the mirror. I felt suicidal and had many thoughts of going with it. I didn't see a clear future; my life was very dark, and looking back on it, quite a blur.
But things will only get better for the woman inside you, if you let her be free. Yes, she is in love with someone who doesn't love her back. But one day, the woman inside of you will find a lover better. A person who loves you as the trans woman you are.
The man inside me was in love with a man who didn't love him, too. And it hurts. Like hell. But once you get out of hell, there is a wonderful life waiting for you.
Please don't give up. I'm extremely glad I didn't kill myself, and one day, you'll look back, and be glad that you didn't as well.