Been with my partner for 8 years, live seperately because we both have kids that are settled. I've started to get quite jealous of attention he gets from other women in his office. Last week we attended a 60 birthday party at his work colleagues house.Everything was fine until a woman from his office came up and started chatting to him, no introduction to me , they then walked away from group to have a private conversation. I tried not to notice too much and mingled. I know there has been redundancies and anxiety in the office and wasn't too bothered but when he came back over to me, after about 40 mins, he seemed abit irked so I asked him jokingly what was the conversation about. He flipped said why did I have to grill him about every conversation he has with another women and then ignored me all the way home. I was driving so he could drink, I didn't stay over as was so annoyed especially after asking an innocent question.. I didn't ask him accusing him of anything but now I'm paranoid it was something more? I'm annoyed he has more loyalty for his work wives than me and now I don't even care what they were discussing but his reaction was weird. Am I being too sensitive? He is a huge flirt at work and all the women like him.. he goes overboard friendly.. brings in cakes, gives lifts , charming but often with me he's moody and am starting to wonder if something's going on?