I get jealous and mad at the thought of my husband being better to his ex than he is to me?

So my husband had a previous marriage which was chaos at initial sight but he really loved her and was blinded. He was married for a year and the year that they were married she was hot and cold with him yet he would do and try so much with her. She would leave the house whenever she wanted , disappear for weeks and block him off her phone . He then seeked counseling with her all while doing the most for her and with her . My phone broke a while ago and he gave me an extra phone he had which didn't include talks between her and him but with everyone else about her . For anything and everything it was "My wife" he traveled and did so many things with her , would go out dancing and would really try and enjoy having fun with her , both of them together . Now 3 years later his married to me. He doesn't ever show me off or present me as his wife but with my name, we never do anything fun , we don't go out to dance together or anywhere (we have no children yet , I think we should be out having fun!?) he works all week whenever his odd work instead of coming home to me he wants to go get drinks with co workers . Every weekend instead of planning something for us , he plans to go hangout with friends . We never hangout alone , it's always with his friends and Idk it bothers me ? I todo him the other day that we should plan a little short trip to Tahoe and stay there one night . He said "it's expensive " he makes 15k a month !? I looked at the rooms and they're around 100-150 a night ? -.-