<human>: M[23] here dating F[22] for over 3 months. Our relationship has been completely amazing from the get go. The connections, chemistry, attraction, everything is there and I couldn't be happier with her.

Lately though, I've been stressing a little about her ex. He [30] and her dated for about 4 years, and she broke up with him just about 1 year ago. He is currently her boss at one of her jobs and has been since before they dated. She has told me that she doesn't have feeling for him anymore (which makes sense considering what we currently have), but for some reason I'm still threatened by him. I used to be kind of a jealous person back in high school but really focused on working on that and thought I had overcome that tendency. But now he's starting to bother me, and I don't know if it's warranted. Being her boss, they will be spending every single day together this upcoming summer (day camp), which really wouldn't bother me except for the fact that I currently only get to see her twice, sometimes once, a week even though we live less than 30 mins from each other. I also recently found out that he has a habit of texting her late at night purely because he can't sleep (wasn't snooping, he just happened to do it when we were hanging out the other night).

Long story short, his behavior is starting to bother me and I don't know if my feelings are warranted, and if they are, how to proceed. I hate feeling like this because I'd really just like to focus on what we have and nothing else, because it's been so awesome. I just don't want to jack anything up because of potentially childish feelings. Thoughts/advice?

Can you give me a shortened version of the text?
<bot>: GF's ex of 4 years is starting to make me feel threatened and I don't know if it's warranted based on his behavior and the circumstances.