Do girls do this or is it just me?

[Stephanie]

my ex, the guy I lost it to, always has a new girl or is always talking to someone new, I know this because he always puts it on his social media. I guess you can say we're in okay (?) terms. we have each other on Facebook Snapchat and Twitter and occasionally talk. It's complicated really. When we see each other we hook up, but this is only like twice a year really....anyways is it wrong that I automatically dislike any girl he talks to? Like I just criticize them in my head I'm like 'ugh you're stupid' anyways. I haven't talked to him in a month and I recently found out he's talking to this girl I used to be really close with, me and her are not close anymore but we still consider each other friends, we just drifted apart, anyways now I dislike her for talking to him, and I dislike him for doing this since he knows me and her are friends. I constantly compare myself to her and well now I don't even wanna speak to her ever. Are girls like this or am I the only one?
this guy is the only guy I do this with though maybe cause he was my first, so I dislike any girl he talks to. I don't stalk him or anything it's just kind of hard not to know who he's talking to when it's all over his social media

[MythicalPerson]

I think your jealous. I'm a guy and from reading this, I have an image in my head that you are this stalky attachy kind of girl. Don't take it personally. But I say other girls feel like this to though.

[Allie]

It sounds like you still have feelings for him. I would tell him. If he does not feel the same then remove him from your life. Delete him on all of your social profiles. If he doesn't want to be a couple I would stop sleeping with him. Give yourself a chance to move on.