Is my ex trying to mess things up for me?

Ugh ex boyfriends, they should all be put down. My ex did the same thing to me saying my boyfriend was a womanizer and would dump me the second I didn't put out blah blah blah. My boyfriend and I went on to get married, we didn't have sex until 4 days before the wedding (we tried to wait haha), and we're finally expecting our first child. My ex didn't want to see me with any other guy, especially someone he knew. You're ex is just trying to ruin the relationship for you, trust me.