This may sound silly but want opinions please.My partner of 10 years had his birthday on Friday . The only issue I have in our relationship is I get anxious with his office relationships. He works mainly with women and I have found him flirty /joking texting .he doesn't know I know.Nothing really inappropriate but feel horrible. I think because he is such s bad texter with me it makes me feel he puts more effort in with these women. Anyway his birthday was last week. He told me that he had to pop into office that day for an impromptu meeting with manager previous to that he said he was working elsewhere but I think they had organised something for his birthday. Nothing wrong with that but why not mention it. He smelt of garlic as well which made me think he had a meal out. When I gave him my card he said it was a poor birthday as only had my card from me and his son. Today I found a collection of Birthday cards from these women at work and a huge card under his car seat signed by all his work colleagues and chocolates. One said to Mr Handsome and hope you enjoy the surprise meal. So does it matter he kept quiet.He lied about the whole day and even said he was full when I got a Chinese that evening saying he had been snacking.It's not a big deal but made me feel weird. I haven't got a history of argueing over this but he seems to keep our 2 worlds separate. He never has his phone switched on or takes calls in front of me but know he gets texts and has previously had an affair when he was married to his ex. Paranoia is an irrational emotion but my gut is telling me something ?