Bit of pre situation context shes been caught in the past hiding messages from people, so trust is alreddy a bit broken. For the past few months my gf has come home talkimg about a certain male coworker (M27) every single day. Mentions jokes hes made, what hes said, what theyve done together and stuff about his personal life. Its like she cant help it and doesnt realise shes doing it. She gets very enthusiastic about it. I made a comment about it and she immediately got mad and told me not to be jealous over her coworker. The day that they added each other on social media, she came home ecstatic and in a really bubbly mood, nearly buzzin. She doesnt usually post much when she does its pics of us etc. Straight away she made a new post, full of pics of her. Her coworker immediately liked it and commented on it. Shes been posting a lot more since with similar outcomes. Heres where it gets weird? She mentioned she has now turned off her phone nptifications as they now apparently "annoy her". One time she was scrolling thru her pics and there was a photo of him and she hesitated a lot when she noticed i could see it. When she gets home her phone is glued to her, and shell place it face down on the table. She wont open any apps or check anything in front of me. Weve been going through a really rough time, unable to fall pregnant and having a lot of money issues which has caused us a lot of stress and ive found out she cried to him about it. He has also confided in her over his issues. She says she feels like we have been distant and tbh we have. She has even gone so far to tell me his "type" is bigger girls (my gf is fairly slim) ive checked his socials and that appears far from the truth. Shes just acting different and when you know someone well you know when something is up? My intuition is going crazy, but i am unsure whether my feelings are valid or if im over paranoid due to the past. I feel like im being gaslit. Am i making mountains out of mole hills? How do i approach this? Every way i have gone about it has resulted in fights, she gets really mad and she becomes more withdrawn. Any advice or insight appreciated!