<human>: Can you give me a shortened version of the text?

Okay, so we dated for a year. He left me and while we were broken up he dated a woman and I went on a few dates with other men too. We got back together about 5 month ago because I still love him. 

Everything is going great, but there is one thing that is bothering me. He is still talking to his ex girlfriend, the one he dated 4 days after we broke up. I mean like facebook, text and all that good stuff. 

 I lost all contact with the few guys I went on a date with because I don't think its right for me to talk to them when I am in a serious relationship. 

Is this something I should be upset about? Or am I just being an overly attached girlfriend?
<bot>: I don't like the fact that my boyfriend still talks to his ex girlfriend. Am I being overly attached or is it okay for me to be upset over?