Is there anything I can do about my low self-esteem and jealous behavior?

you missed out, but she was probably the rebound girl for him to get over you. be glad you have him back and are back together. He is a guy being a virgin as a guy and a girl are 2 different things. be glad he has some experience so things will be better for you when you get with him. it doesn't matter if you feel you can't compare to her. you not only compare to her you are better because he dumped her and came back to you. so you won. however, there are self esteem books and tapes that you can listen to that will help you out. you don't need to be jealouse its done and over with and in the past. you cant change it now. it happened for a reason and it was meant to happen that way. nothing you can do now, get over it, let it go and be happy you have the guy. i know it is easier said than done. it would help if you tell him how you are feeling. cuz his reaasurance would make all of these feelings go away. cuz he will tell you straight out how he feels about it all and that will help you out tremendously. good luck. hey can you go answer my question please?