My DP worked at a different place to usual last week and met a woman there. He had never met her before (and probably won't see her again via work). He told me about some funny conversation they had and I thought no more of it. However, the other night I was on Facebook when it came up in my newsfeed that he'd just become friends with a woman. Again, I didn't think much of it. It was only the next day when I tagged him in a photo of our DD that I saw that he'd hidden from his timeline that he became friends with her. I looked at her profile as I remembered the name and its the woman from work last week. I have never been paranoid or made any comments about other women but I personally think this is dodgy. Firstly, I would not add/accept a man I'd met only once (usually he's quite a private person and fussy with who his Facebook friends are) and secondly I would not hide the activity. Am I wrong to think this is odd?