Calling off the wedding /in too deep

It’s 54 days until my wedding and every other day I want to call it off. So much money has been spent by his parents, my parents and both of us, I feel it’s too late to turn back. To top it off he just closed on a house for us, my daughter is excited about the new house and starting her senior year at a new school, plus my lease is up and I don’t have anywhere to go other than “our “ new house.... the problem is he’s not right for me and I’ve been trying to make it work. He has a terrible temper, and since he came back from deployment his temper is worse. He sleeps on top of the covers in a separate blanket, and doesn’t like for me to touch him. Some nights I cry because of it. We have sex once every 10 days we used to do it all the time, we used to cuddle. I don’t know if it’s PTSD or if he turned bisexual overseas. He tells me he loves me and is like my best friend but only touching and having sex on his terms isn’t going to work. Not sure what to do.