I Need Advise!!! Please!!

Hi.. Im hoping some one can give me some advise. Im 23 and my boyfriend is 22. We have been together for 10 months. He lied to me alot in the beggining of our relationship and betrayed me but I forgave him because im so inlove with him. We are so perfect for eachother. We love eachother alot but there is one thing we fight about every day. Its ruining us. I know he loves me and eevrything but... He looks around at girls alot. Hes always noticing girls every where we go. I always see him glancing at random girls or staring at them. It hurts my feelings because its happening alllll the time. I dont know if it is normal. It makes me feel like hes not attracted to me. He always tells me we are going to get married and he wants to be with me forever. We are always together.. We live to gether and we love eachother. Not that many girls ever look at him and so I dont understand why he looks at them so much. Not many girls think he is attractive but I think hes so hot. Its like he wants to look around at girls to see if any are looking at him. To me it seems like he loves when a girls looks at him... Even if shes not that pretty. When we go out to dinner, when we go to the store, everywhere... He always looks, glances at, or stares at girls. And when I tell him to stop he yells at me and is very mean to me. Its like he cant controll it when he sees a girl. He never talks to girls or anything cuz we are always together. He looks at girls in front of me and he denys it sooo much. He says he never looks at girls. We fight about it so much and we are about to break up. I love him sooooooooo much. And I tell him every day how much it hurts me when hes always looking around. Ya.. I know its normal for guys to look at girls... But I cant handle it when he looks at ugly girls and when he notices any kind of females every where we go. I dont look at guys in front of him and I dont want to. What makes my boyfriend want to look around at dumb girls all the time? He even looks at older women, moms, and way young girls. Am I the one with the problem?? I try not to let it bother me but it does. He will never stop this so I need to get over him or deal with this. My ex boyfriend never checked girls out in front of me so I know not every guy is like this. Why does my boyfriend do this? Is he really horny or not ready for a relationship???