I don’t know if perhaps this is my own insecurity or not.. I have been seeing someone for 5 months now, it’s going really well and I am really in to him, we both have children from previous relationships so obviously there needs to be contact with ex’s however his ex sometimes tries to flirt when he told her a few weeks ago that they weren’t getting back together she huffed and puffed about it. She has a new boyfriend but sometimes he makes silly sly remarks to her about her new relationship, I’m starting to feel like he is maybe not over her completely.. what do I do?