DH has a specific interest - imagine a niche type of music...
He has three insta accounts related to different elements of the interest.
I noticed he was 'liking' the posts of a particular woman across all of his accounts - going as far as commenting on her content on Christmas Day.
I challenged it and he said it was just to do with their shared interest and there'd been no DMs... he showed me his DM screen - no DMs... I asked about the other accounts and sure enough - there were DMs he'd "forgotten about".
He showed me the DMs and one of them was her talking about an event in our hometown - nowhere near her hometown and there's an event closer to her.
There was no "Hi it's me..." type introduction so it's clear to me they must have spoken before. He said they have been talking as part of a larger group for 5+ years - but he has never mentioned her to me before.
We've had a huge row about this. He said he's been naive and he loves me etc. I don't believe anything untoward, in terms of meeting up, has happened but I feel it's inappropriate.
It's also really impacted my self-esteem. I have put on some weight lately and a lot of her posts are about weight loss and how good she feels.
We don't have sex, there's nothing in the way of touching - I don't feel desired. He has explained this away as being "him" and not "me", but that doesn't change the overall impact on me which is that I am feeling pretty low right now.
Any advice? Am I being over-sensitive about the DMs and insta-interaction?