Out of no where, after 17 years, I am getting feelings for my ex. I broke up with her for no good reason ( I was told to by my flat mate ), even though I really liked her. Back then I was a weak, spineless person who wanted to impress others. I am now happily married with 3 kids ( she is also now married with kids ) but I feel like I need to apologize to her for showing her such little respect, although I don't know if it is appropriate. I am not after forgiveness or want to get back together.
I don't know why it has come out of the blue, and how to move on from it.