Is my marriage over

For the last few years the sex in my marriage has been slowly dwindling away to the point I can't remember the last time we were intimate. I want a baby, my husband tells me he does too but won't have sex with me which is the fundamental of conceiving. Tonight I caught him masturbating to porn with a flesh light, yet I was wide awake in our bed ready to go, all he had to do was come to bed. I can't deal with no sex or intimacy to the point out of anger I gave him an ultimatum, decide what you really want and if it's me and a family, don't talk to me or look at me or sleep in my bed until you are willing to give me sex. To be frank I don't care if he doesn't come back to me now just as long as I can get on with my life and find a new partner who wants the same things as me