I have been thinking of my ex's when I drink
Have you thought about these exes before tonight?
Yes, I was thinking of how it would be to be with the person I was with 4 years ago.
Maybe you are not over them then. You should not be thinking about your ex when you are involved with someone else.
It doesn't matter. I'm going to let the exes get away for good this weekend. I've had enough of them.
That is good you are going to let go of the past but some thoughts can be intrusive. If you struggle with them and they keep popping back you might need to talk with a professional.