How can i stay with the man i love, when he isn't that man anymore.. my marriage is all i have or have i?

My husband left our home when our baby was only 2months old. He couldn't handle my insecurities that he gave me. he would say put up or **** off.. he was constantly on his mobile phone texts and said he didn't meddle in my life and i wasn't allowed to ask where he had been or who he text. so that caused mass confusion and pent up anger. Bottom line rejection. This was in 2007, after that on and off casual texts sometimes nice sometimes insulting from him. I never wanted it to be over as it never began but we got in contact again and as usual he's excuse would be he's homeless. I didn't want him back to mess me up again as i'd moved on. Any way like i said we have a little one together and that's quite a bond, he said it weren't his, turns out he was seeing our son through his mother all along. they both lied to me. This was after i let him move back in to repair our marriage. his mother was very angry and said some nasty things she claims he said. I took no notice. he's stepsons were happy to see him again and wanted us now to be a happy family. October 2010. I asked him why he didn't wear his wedding rings. he said he sold them for food. I put my rings in his valentines card as he is on a dating line as a single man and claims he's romantic. i found them 3 months later cleaning up my shelves tucked away. He said he wanted me to know he's friends when he came back and to have more to do with my friends and family. He then started going out and said i couldn't come. He would never compliment me and when i was crying with a bad gastric attack. he got annoyed cause i woke him up. we have been in separate beds for 5 months now. i make family meals, and when i was unwell he just fed himself. I've given this man a chance to be apart of my family again but he said he's step children have nothing to do with him, but if people are around he seems very concerned and caring. Last month i broke down in my car with my children and still had to do another 10 miles to get to our son, i rang him as he was only around the corner helping a friend and said he'd be back by 4pm, which was about that time. He snapped at me that he was all alone with his mates girlfriend and there was nothing he could do. So i reminded him i was his wife and his child was stuck 10 miles away. He turned up with some jump leads claiming that he'd told he's friends that i'd been ringing him all day giving him abuse?? what the ****!!. So he stayed out until 11pm, no text no nothing. It was our Anniversary today i bought him a card and booked a dinner for us later. something has snapped in me when he said don't worry about a card cause i couldn't get you one as i have no money, when i know he had. I binned his card and cancelled dinner. I still feel separated and a single mum as i am doing everything as before but now more. I know it takes time to patch things up, but there doesn't seem to be any comeback, input, intimacy, communication, with exception to cricket scores and certain subjects on his pal talk that he is on 24 7. I can't help thinking get rid, this idiots taking you for a ride. This is just a roof. The kids are my world he seems jealous of them...Can't help the para.. I say to him do you love me, he says of course i do looking away. i ask him why he can't look me in the eye anymore. he ignored me. that's it. i told him did he want a divorce he said anything that you want. cause your gonna do what you want to do anyway.. head ****!! I was betrayed right from the start as the man i fell in love with was tall dark and handsome very well spoken and a gentleman, Then out of nowhere he said he was growing his hair. it wasn't until i found some picture of him that he had always been a big chunky metal head with attitude rude & cold..It took me along time to get over the love of my life It was like he was taken from me by death...He's in that hair & beard somewhere and grew to love and accept that from a distance but now it's reality, he's here and he's my husband so it means i've accepted him for everything. yet it's still not good.. i give the **** up!!