DP stayed over the other night (we’re both middle-aged and divorced). To cut a long story short, discovered they’d spent a good couple of ours messaging a friend of the opposite sex who I knew nothing about previously.
I’m okay with opposite-sex friends (I have some of my own and know of some others of dp) and we trust each other, but I’ll be honest and say I felt a bit upset about this one - but not sure why? They’ve apparently known each other for a few years and nothing’s ever happened. DP insisted on showing me the messages, to prove nothing untoward was happening, and whilst there was nothing sexual, it was almost an hour and a half of them instantly replying to each other, teasing each other and bantering with in-jokes, etc whilst I’d been there in the background, in the dark. I think it’s that which hurts - just the intensity of it all. But maybe it’s just because I don’t personally have an opposite sex friend with whom I have a similar level of social engagement? Can anyone help me make sense of it all?