Ok so here goes a large one.
I was born a girl - currently 19. My boyfriend was born a boy - currently 21. (I'd like to point out on my country we are both legal adults)
Ok. I'm still figuring out what's the right thing to do about everything.
Currently I'm using male pronouns and he does too altho he alternates to she pronouns from time to time.
He does not particullary give much importance to his gender relative stuff because he feels like transitioning on these times is too risky, as he will not look as he would like to (may still look like a male wearing makeup) but I'm certain if he could he would be a she, i see it hurts him and so he does what he can to make me confortable about it.
In my case I'm using he pronouns for about a month, in college, friends, himself, except family.
I've thought of transitioning and I'm not gonna lie I've thought of having a full boy body and sometimes I feel so complete when dreaming about it but I just keep it real and think on being.. transgender or nonbinary (since I don't quite feel like male only and 100% male)
Anyways, there's that and then there's sex.

In our case we've discovered that sorta "role playing" is very enjoyable for both of us. By roleplaying I mean "pretend" as we were finally what we want (she a woman and me a man, like with penis and vagina of course)
and we "pretend" to have sex that way, sometimes she'll go on top others she'll be bottom, it's incredible how real it feels sometimes. I myself can feel as if I had a penis and went inside her, she has experienced such real sensations that one time he even came (like we never touched eachother, just to not break the ilusion about genital areas).
I mean at first we thought it was kinda weird but it helped us see how real our situation was. 
We are still thinking on transition, we already agreed on certain stuff like he wants me to remove all chest brest fat and do modification so I can atleast aesthetically feel confortable, but genital area and hormones, still figuring out for future.
What I was wondering was if anyone else has experienced this "ghost" feeling in any situation, and hopefully see how were some of your experiences in this "trans couple" situation.
(Also if MTF or FTM people on the area could help me find out about how pleasure and genital modification works afterwards while sex like that's a mayor desinformation we need to satisfy)Thank you all for ur time.