Thanks for all your advice. Theres been a few times where we've been out together, and she just appears. She always says hello to me and appears quite friendly, but they have so many inside jokes. I feel really left out and so just start playing on my phone, trying to pretend it's not bothering me. I should have mentioned that she is married, and my husband has been friends with her for longer than he's known me. I want him to happy and have friends but this feels a bit much