I think I’m trans (ftm) but I’m in a lesbian relationship, she’s lesbian

I don’t know what do to at this point. I love her so so much and I don’t want to lose her but I hate being called she her and my feminine name. I want to be called he him and my masculine chosen name. I just don’t want to ruin what I have. 2 of my friends are already suspicious of me being trans. I just don’t know what to do. I’m a sophomore in high school if that helps.