My bf feels like breaking up with me because of his preferences

So basically we are in a rlp for 1.5 or smth like that and I actually have hidden a part of my past that I'm impure(as in I have touched or kissed someone before this rlp) and he doesn't trust me now but idk why did this have to be the reason he's gonna break up with me...no matter how much we talk or communicate about it. It doesn't get solved. His preferences are past matters and he must know about it and I don't really care about past but what I do care about is if you can really handle this rlp any further to marriage or yk yk. I have said no to him asking about it several times so I lied that yes I'm pure but now he thinks the image I have given him is a lie and now I'm a whole lot different person from what he has in his mind. I srsly DK what to do anymore. I wish he could understand that our past does not affect the future but it does if we keep thinking about it.