Frustrating

I'm getting really frustrated sexuly, I'm someone who has not got a massive drive to be with people and I don't like doing it with my current bf because on top of other issues we have u just don't find him sexuly attractive in anyway.But the past few months I have found my very wound up wanting to do a lot of suff but just not with him at all in any way, it's driving me mad and getting me dowb massively, we are thinking about breaking up and honstly for me it's really hard to let go despite all our issues.