Should we try again or should we end the relationship ?

Me & my current "fiance" have been together 14 months. After a shaky first 4 months in which time he left me, he came back to me & even proposed to me infront of my daughter & her fiance on my birthday last july. Previously he has lived with 1 woman he's had 2 children by (20yrs), cheated on her then moved in with another woman for 2 years & then when that finished had another relationship with a different woman with a teenage child. That ended when she cheated on him. He bought houses to live with each woman & has a good, high paid but stressful job...I'll try to be quick but you'd better get a cup of tea!!! ! I'm no saint & was married for one year at 18 for one year (way out of an abusive family home) & have had several long term relationships but only lived with one man, the father of my daughter for 7 years. My daughter is now 19 & I live on my own & my fiance & I are both in our 40's...Anyway, after proposing, I moved into his house and away from my daughter which was difficult as I don't drive. I found the relationship difficult as he still talked alot about his past who'd cheated & his own guilt of cheating, also I felt isolated & was bored not working but "settling in" to my new home.... I was concerned he was not ready for a relationship but by then was already in love with him. he began picking fights over what I considered non existant "moods" I was in, but now 14 months later it is clear the moods are actually his own sulleness after a stressy week & he gets the same on a sunday eve before he has to go back. I was attracted by his charm initially, his "good job", therefore offering me security but also we had a lot in common : healthy lifestyle, food & exercise.We seemed to be at the same ponts in our lives to settle down with a life partner & its what I want. Since being together after initially being happy & coming off anti depressants(before I met him), I am feeling stressed & erring towards depression again but find it difficult to leave. He made me leave his house after 2 months & luckily I had kept my own so I had my home to go back to. After I left he wanted me back & this on/off relationship has continued with him walking out on me virtually every month. When he does I don't hear from him for anything from 2 days, a week or 2. He says its over(usually after a drink), I know he doesn't mean it & the cycle will repeat & the things he says it feels like he's talking to someone else. Our rows have got out of control & it is usually because I challenge him about the hurtful untru remarks or in past saying I don't want to hear about his ex. His good qualities ? He is very generous with money & has good taste...At first extended to me but lately he is even more withdrawn & does not want to go out at weekend "destressing" preferring to mooch round the home. Our lives very much revolve around each other & our kids only when a family celebration comes up. We used to exercise together but that has also stopped, and his destressing as turned into a bottle or 2 of wine which I also enjoy but I'm struggling to keep up with him & he refills quicker than I do...(I have only had a few temporary jobs since I have known him so he pays fo most stuff but recently making comments to me about having no money but I am trying THE VERY BEST I CAN to find work)...He stressed from the begining, he would prefer I work part time(perhaps coz his ex met her cheater in the work place?) & keep home, I was happy with that after years of struggling as a single mum...Anyway, its happened again ! After a sullen mood on friday night & saturday day, he actually attended his daughters birthday without me & by text he has admitted to me we need to sit down & chat about whether we are compatable or not once & for all...He told me this after keeping me in the dark/silence for 3 days after I was besides myself and forced to send him strong demanding texts to try get an answer from him as to what was happening ??? I feel I've been to hell & back, moved twice last year, have been dragged round several houses for him to buy one for "us" to watch 2 offers go down the pan because of one of his moods have caused a trivial row & ineviteable seperation again...I do actually still love him but we can't communicate & I am dreading meeting up to talk coz talking to him generally is like treading on egg shells. I don't like challenging him by text but usually it is the only way to get some kind of response from him....I thought i'd met my "perfect match"...he talked of me fulfilling all his needs in a woman & I am his soul mate but obviously I don't feel secure or any real commitment from him...Its crazy I would still try again ???yep really...what do we do guys ? It just seems the perfect ending to my life, my happy ever after is over without a chance & I don't know or understand why ? I have spent so