Advice?

Me and my boyfriend have broken up and gotten back together once before. He just tried breaking up with me again. The second time we’ve been together for 8 months and have grown extremely close. I figured everything was going fine until he texts me we need to talk, which of course sends me into a panic. We call for a bit and he says he essentially wants to break up because I am trans and his parents wouldn’t be accepting (mainly his father). So what do I do? Freak out and tell him im not trans anymore and that i’ve been debating that im not trans because i’m too scared to let him go. We’ve had a really healthy relationship with minor arguments in which we communicated like adults (We’re both 17 for context) and I fully intend to marry this man. By him trying to break up with me he broke our promise of we wont break up unless boundaries are crossed. He said to give it 2 weeks and if I change my mind we are done. I don’t want to let him go because I will not make it out of the depressive episode if we break up and probably won’t be able to handle it. Any advice or if I should give up the relationship? For more context this is almost the same reason he broke up with me the first time and I was depressed for a good while. I honestly don’t know what to do. It is true I’ve considered whether im trans or not because I dress very femininely. Thank you.