You are going to be on testosterone some day (if that's what you want). You're going to get chest surgery (again, if you want it). You will put on muscle just as easily, if not more so, than every other cis-dude. It's an inescapable fact. If you're on this board, you're most likely going to end up doing these things, and by the time people reach out online, it usually means it's going to happen sooner, rather than later. So whenever C.B. starts getting on your nerves, remember that in the near future you are probably going to look like every other guy on the street, if not better. You'll work out, you'll be jacked, and C.B. is going to realize that you'll make a better best man than he ever could.
Things are going to start looking up soon, I promise you!