My ex girlfriend was hanging around a lot with a female friend from her work, i asked her a couple times if they were having a relationship and she always said no. recently she found out i'm seeing someone else and now she sais they are together but it's still new. Now i'm wondering if she's serious or just trying to make me jealous to maybe get me back or so in the future. I know she was dating other guys after we broke up, so i find it hard to believe this is serious. also the girl from her work is really obsessed with her.