My relationship sucks

I just hate it. We have nothing in common except the kids, he never wants to spend time with me, we literally never ever ever have sex. I cry from loneliness. I think hes cheating and I don't even care, I wish hed just admit it so I could too. We cant survive financially without the others income so we both are stuck. Why does life have to suck so much, all I ever wanted was love.