Ex just got married 😔

I know I'm going to sound crazy and selfish but I can't help feeling this way. An ex I had from college jut recently got married, we always believed we were eachother's soul mates the timing was just never right with us. He graduated college 2 years before me and moved back home across the country to Chicago, I started dating someone else and we were really serious, moved in together and everything and after a while he got a job offer and we moved to Michigan. The only family I had nearby was an aunt and uncle in Chicago (15 minutes from my ex) he found out through mutual friends that I was now living closer to him and he contacted me and we started talking (just as friends) and after about a year my now husband and I decided to elope and I told him and he kept telling me I was making a huge mistake and not to marry him because we both knew we were meant to be together and that he would make me happier than anyone else could. I stopped talking to him and got married, after about 7-8 months I found out I was pregnant and got back in touch with him, I told him because I didn't want him to find out through anyone else and get upset. He told me he was dating someone and they were also going to have a baby and get married. Knowing him very well I know he's only marrying her because she's pregnant and he wants to do things right. They just got married yesterday and I dont know why I feel so jealous like it should be me, but I'm the one who chose my husband over him in the first place. and I love my husband more than anything in the world, I just can't help this feeling.