So my DP has a female friend, who he once had a relationship with but now assures me they are only friends. I once met her at the start of our relationship and it was awful I might aswell of been the third wheel so never saw her again after that! They messaged on Facebook maybe once a week and as I could see what they were talking about I didn't have an issue with it (especially as she had a partner at the time), although occasionally had to tell DP that some of the stuff he says can come across as flirting.
After I had our DD this female friend invited DP to her house and said he was welcome to take our DD, to which I said no I don't feel comfortable with that (as she is now single).
I've now noticed they are talking on snapchat instead of Facebook, and they talk every day but only when DP is at work, I can't see what they talk about as snapchat clears the conversation... my mind has been playing havoc... I know I probably have trust issues but I just don't know how to bring it up... it makes me more mad because I know if I were to message another man even one I've never had a relationship with that DP would not like it one bit...
WHAT DO I DO 