My partner never wants to have sex with me

Hey, im 23 years old and my partner is 25. When we first met things were pretty good (though he was cheating and I didnt know) and about a year later I fell pregnant and we decided to move in together, I lost the baby but we seemed pretty happy still - he did cheat on me a couple more times but other than that we were alright. But as things have gone on he seems to have zero interest in me at all, he says he loves me but the truth is - he wakes up at 5 to 12 every day, goes to work (he owns a pub) gets home about 5, goes STRAIGHT on his xbox/laptop (except on 3 days a week he goes playing poker etc with friends) and I get no attention at all, but its got to the point where we will have sex once a month (if that!) and i'm so frustrated, not JUST because of the sex but because i get no emotional involvment from him at all. And for the first time in a month he just started kissing me in bed, turns out he wanted a blowjob then straight to sleep... he didnt actually even touch me, when i hinted at intercourse he said he wont last so theres no point. I have no idea what to do, im getting so down about it. The thing is when another girl gives him attention he's so easy, he will literally have sex with anybody if they flirt with him (he said its because men like the 'unknown'). I know it's a really immature thing to say but I feel so ugly its just horrible, even on the rare occasion we do have sex he never even looks at me. I just want to make him interested in me but i've no idea how to, and even more so to the point I have NO idea why he doesnt want sex with me.

my heart goes out to you Kali, but i think you know the answer to your question already, i could type for hours asking you what are you still doing with him, you're better than that etc etc but my guess is you already know this. Yes its scary to be out in the world on your own but staying with the wrong person out of fear of being alone is even scarier, take your time but ultimately it has to be done, you have to leave this selfish, arrogant, cheating, uncaring, love-less, heart-less man. Best of luck and enjoy all the love and joy and happiness that you will find as soon as you really let him go for good.