I think i may have blown my relationship?

Basically me and my bf have been together for five and half years, he is aquarius i am cancer we got engaged in this year. But we have some trust issues when we were datin in the begining and not yet sleeping together he slept with his ex. I have now always been very wary of her and her circle of friends who try at any chance to hang out with him and to get at me. When we argue he doesnt give me what i need to hear and i go bonkers, he went to a party and i suspected the ex could be there and he lied and said he wasnt there. He said he was lying so i would not go mad but lying to me made it worse i sent him a load of horrible texts etc and left our home and gave him the ring back as he said he cant be with me as he cant deal with me gettig mad all the time and i said i cant be with a liar!! basically i apologised and he isnt interested he said i am wasting my time?? i love him can anyone offer advice its alot to do with our star signs that can give you a idea as to what we are like with each othr to a 't'?? please help im heartbroke