I don't know if I should break up with my fiance. He drives me crazy!?

He annoys me a lot, grabs me in public when I ask him not to, I'm not attracted to him anymore, and he has very little modivation. This is petty, but bothers me: He recently bought me an engagement ring that is .33 carats he got on clearance for 300 bucks, lied about the price and size, and now he wants his ring to be a 1.25 carat wedding ring!!what the hell is that ****???i confronted him and he is always makinig up excuses for ****...I was REALLY sick last week and had to get a blood transfusion....I asked him to stay home with me and go to the hospital and he didnt...yesterday and today though, he called in for NO REASON AT ALL!..he said that i was not really sick. im just tired of all the ****..i DO love him, but hes driving me crazy....im no angel, and weve been together 4 years through a lot....but i just feel like im settling for something...ive broken it off several times, but we get back together cuz its comfortable...what should i do?!