Long story short and spare the drama. The bf thinks I am cheating on him and wants access to my fb messages on his phone for whenever he wants to check them. I am more then 100% ok with that. The problem is I don’t want him to have my email and password info I have my own reasons. Is there a way for him to have full access to my messages without having my info in his phone? I know it’s wishful thinking.
I could have access to my wife’s FB and she can see mine, we do that all the time without hiding messages from eachother.
BUT
To demand that, to want that from you in the first place, even if you are ok with that, its a major red flag. Yes its possible to make him login without accessing your email. Those are different passwords anyway (they may be the same, thats on you, but they are based on different platforms and hosts). But to make him do that is to bend to his will.
Today, is your facebook account. Tomorrow, your instagram. Then, the email. See the issue?
My advice (and many other users here): tell him goodbye. I know it may hurt, but its the best for you on the long run.