Hi I'm wondering if I'm being ott about this. I'll try and keep it short.So my dp has a female friend who he used to work with, she doesn't work there anymore. He apparently became close with her when he started but since has also become close with her new bf who also works with him. She started their relationship whilst she worked there. He never really spoke about her but I knew about her bf as he talks regularly about him and talks on the phone in front of me with him. He has been out as a group with a few people from work including these two on a few occasions and this is how i learned about her as I saw pictures of them. I have to add that my dp is a flirty outgoing person.
Anyways, to the point, one day i was driving behind him (going home as picked up kids from his mums and he met us there in his car from work) in separate cars but his bluetooth connected to my car and I heard a female voice-hers but I didn't know initially. She put the phone down as the connection was bad and I didn't speak as I was shocked that he was talking to a female (it was nearly midnight) He immediately called me to tell me he was going to the shop, do i want anything? (an excuse as we were round the corner from our house and he obv wanted to continue convo). I confronted him about the female to which he replied it was his friend. I don't think this is appropriate because of the time and also she doesn't even work with him anymore and is apparently dating his close friend from work. Anyways I kinda left it as i didn't want to come across as some bunny boiler but i let him know i didn't think it was appropriate. but since then a few months down the line he let me see his phone and there was a text from him saying 'I think you're such an amazing person x" or something along those lines. He told me he said it because she congratulated him on pay rise even though her bf didn't get one and is annoyed at me as he thinks i'm overreacting. Can i add that he never talks about female friends to me or in front of me and now all of a sudden as I've seen/heard something she's a really close friend of his. If i had a male friend from work who had a family at home i wouldn't think it appropriate to call at midnight. aibu? sorry for being so long.