Love over Lust? Cheating ex bf...am I wrong for feeling this way?

My ex boyfriend left me for some other chick. I strongly believe that it has a lot to do with her physical ets. I mean gorgeous chick, looks a lot like myself in a sense. The major difference is that she has this nice body... mines is ok but not as defined as hers. We had so much in common and we got along well but during Tech school he met this girl and has never looked back. The crazy part is he made all of these promises that we were going to be together before basic. He brought me a promise ring, everything was good....so I thought. He does contact me everyone in awhile and ask for another chance (must I mind you this is while he is dating her) but I always say no. He has been lying about it all and has no clue I even know about him dating the girl from tech school. But I said all of that to ask, from a personal perspective would you leave someone you really had feelings for and a connection with for someone who may appear better physically? Secondly, am I wrong for wanting their relationship to not work out? Although I know we could never be together because of what he did to me...I can’t help but admit that a part of me wants to see him hurt like I did... I can honestly say I was beyond shocked to find out he left me for someone else. In fact, he never broke up with me I just gave up after months and month of him treating me like **** while he was at tech school with his buddies and pushing me off to make time for this other girl (He didn’t know I had inside sources and still doesn’t). Before he left we worked at the same place (that’s how we met) Once he graduated basic and started tech I would ask him why he made absolutely no effort to make time for me and he told me to go get a life, make something of myself, and stay out of his business. I went from about 175lbs to currently 130…talk about miserable my life completely stopped. The catcher is what struck interest in between us was joining the military (I was dealing with a recruiter and he was in the DEP for USAF), and ultimately what lead to us dating. He told his mom that we had a future together and she insisted that I not join. Although I am currently going through the enlistment process and picking back up with my dreams I can’t help but get upset when it cross my mind occasionally. I wouldn’t wish what I went through on any one but I do want him to feel my pain and learn a lesson from all of this, I know I did. Am I wrong for feeling this way? Do people really choose lust over love?