Desperate or inlove?!!

So I'm engaged and confused at this point. Torn in between being with this guy because I love him but he isn't the perfect match for me AND giving up in this relationship and hating myself for giving up. I'm a hopeless romantic. Been in relationships for all sort of reasons but the most common reason for all these relationships is what my heart felt. I've never settled for someone because I was after something, it's always because I genuinely felt something for them. Now I have also come to realize that I always choose to see the best in people no matter what they may say is totally opposite to how they treat me. Now this isn't a case of just my realionships, but as well as my friendships and family and colleagues, I always make the mistake of giving people the benefit of the doubt. Now I'm sitting here asking myself if this isn't the case with my current relationship. I love this man with all I have and we can be the best of friends but there are moments where he just manages to fuck everything up. He isn't a cheat, nowadays I wish he was cause at least I would know what we arguing about. It's like a pattern, he will throw tantrums out of senseless this or assumptions. And when this happens he bites my head off and won't talk to me for at least 2 days, walking around the house doing his own thing. And than he would just switch back to being the man I love and just treat me like a queen. Trust me I've communicated to him how this affects me. He's seen the tears, seen the anxiety get the best of me, I've packed my things and left for home for a couple of days, he would beg me to come back but the same shot would happened every 2 or 3 weeks. So just to cut a long story short, he throw a tantrum on Wed after listening to a conversation I was having with my sis over the phone. Accused me of saying something I know for a fact I didn't say. He's been sleeping in the other room since that day. And this morning he made me breakfast, he just poured me a glass of champagne and he's calling me Bby as if nothing happened. Now I was about to throw this champagne in his face and knock some sense in to him with the champagne glass BUT I contained myself and thought why not seek for advice from you guys. He's said know to couples therapy or individual therapy just for himself but fully acknowledges that he can be out of place. At this point that shit  is not enough anymore. I love this man. I've been the peace in his life and this is something he's whole family has said and love me for that but I'm loosing my mind and my patience and my happiness. It's like he will do all the right this and I'll just be sitting there thinking when's it all going to go downhill again. HELP!! :(