Your girlfriend and her ex-boyfriend are still tight. Before the green-eyed monster rears its head, learn how to manage the situation.
Talk To Her About It
Maybe she’s just missing his friendship, or maybe she just feels he needs her support for something going on in his life. Talk about it. Let her know you are okay with it, so long as she knows where to draw the line and does not do this behind your back. If she’s not being truthful or willing to play by the rules, she’s not worth it.
Ask What You Can Do
This will turn her off completely. Instead, ask her if there is anything you can do to help. Maybe she is missing a certain aspect of the relationship. If so, it will be good to engage your girlfriend in a conversation about your own hook-up. “Tell her exactly what kind of bond you would like with her now, and ask her what kind of relationship she would like with you,” says Alan Cohen, contributing writer for Chicken Soup for the Soul. This conversation might help you both move to the next level.
Show She Has Your Trust
Express that she has your trust, so she shouldn’t break it. This will allow her time to reflect on what’s really happening and how much she values you. If she really does, she’ll soon realise she’s in a secure relationship with you, and will likely just drift further away from her ex and be closer to you.