My bf stopped fucking me

My bf stopped fucking me so I’ve been so obsessed with thinking of my old fucks that I started messaging my old fwb. I love my bf but I’m so horny and I tell him that and he doesn’t listen. I can’t tell him I’m so horny I’m thinking of cheating bc he’ll just leave me but I need SOMETHING. I feel bad but sex feels SO good it almost makes up for it. Idk