I have a work friend whom I’ve gotten close with over the past year. My boyfriend- well now ex- also works at the same job. A little backstory to them is they both knew each other first before we all began working at the same job and they met through a mutual friend who is my ex’s right hand man. My coworker bestie and my ex never really formed a close friendship but were just cool with each other because he use to give Uber rides for half the price. Fast forward to now, the reason my ex is now my ex is because him and his baby mother- to simply put, have unfinished business. I would vent to my coworker bestie about all the offenses and baby mama drama/ cheating that happened in my relationship with him that eventually led to me breaking it off. Now— since me and my ex work at the same job, I have to see him almost everyday and one night we just so happened to hook up. I ended up spending the night and I woke up out my sleep to use the bathroom. My ex had fell asleep to one of his YouTube videos and his phone was unlocked still playing.. wellll me being the nosy person I am, I decided to go through his phone. He doesn’t text a lot of people so there weren’t anything really juicy. My curiosity then led me to him and my coworker bestie’s text thread. Now as mentioned earlier, they are friends and text sometimes here and there and he also gives her a ride on Wednesdays to go to her other job. Anyway, I scrolled until I came across some messages that were 4 1/2 months ago when me and him were together. They were texting sporadically up until 11pm, nothing unusual (about food) and conversation ended. Then at around 2am my coworkerbestie randomly messaged him asking is he up and said “someone wants to please him”. To his reply “who” and she sends a lusty photo of a woman (not of her) in booty shorts. He then say’s “definitely😍”, she laughs and the convo ends…. Immediately I just felt a slight sense of betrayal, confusion and hurt because like why?! I then did some investigation on who the woman is and it turns out the woman is her cousin. At first I didn’t want to bring it up to her because it was kinda old and I didn’t want to create friction but at the same time it was bothering me and personally, something I wouldn’t do to a friend. Needless to say I ended up confronting her about it over dinner, she wasn’t defensive, did say my boyfriend asked her to put him on with someone (which actually wasn’t true because he never asked in their messages) she said she was joking but apologized and we carried on as usual. So many questions flustered my mind because it was flat out weird but at the same time I don’t want to end the friendship over a guy- a guy who I don’t even want a future with. My question is should I be worried? Do I need to keep a more watchful eye going forward? Or is it best to terminate the friendship? Thanks for reading to the end.☺️