While my husband doesn't want me to meet up with my ex I think that I still want to.
What makes you want to meet up with your ex?
I saw my ex who lives far away, but my husband doesn't want me to hang out with him.
Seeking closure is especially beneficial in situations where the relationship ended. Explain this to your husband so that you both can move on from your past.
He should be okay with it because I was with him for a year.
While you think that your husband should be okay with it, and maybe you are correct, it sounds like he is not and you should respect that. You chose your husband and not your ex, so you should close the book on that relationship.