My Life Is Falling Apart

Its funny how life turns out, i was born with a birthmak on my face, my parents thought i would never amount to much, they were very controling etc so i moved into my own place there i meet my partner, we have been together 14 yrs we have had our ups and downs, but lately i cant stand him he gets angry if i speak to anyone he thinks ive got secrets im just stuck at home with our kids, but he can go out to pub or were ever he wants o questions asked its like he wants the single life again but still live with us im tried arquing with him as cant win any way cos he calls me nasty names or call me mental, dont have sex anymore only when he want oral im so tried of his bull but he just wont leave my kids think here goes mum again poor old dad i get it from him and my kids what can i do to make our lives better please can someone help