It's all just stupid stuff that would make me look paranoid/controlling/insane if I mentioned it.
Things like... (again, sorry for the length and detail but, without it, the point would be missed).
We moved in together just before Christmas. Last summer, he still had his own place around a 30 mins drive away. This was around the time I first started to notice inconsistencies but nothing concrete or major and I wasn't sure if it was just me... 🙄
He was staying at mine for the week and needed to pick something up from his flat. This was a fairly frequent occurrence. And he was usually gone for just over an hour. 30 mins drive there and back plus a few mins in the flat.
He went over one evening last summer and was gone for 2 and a half hours. It was so very out of character that I had started to worry that he might have been involved in an accident.
He came back and we had a few mins chat about what he'd picked up and did I want a cup of tea etc.
He brought the tea out into the garden and I said, "You were gone a while! I was starting to worry you'd been in an accident."
He told me that he'd bumped into an old school friend who'd been living overseas and they'd chatted for about half an hour on the street outside his flat. I said, "Oh, you should have gone to X pub for a proper catch up." X pub is run by another of his old school friends just around the corner so they would have all known each other.
He said that he hadn't because the conversation had been a bit awkward, old friend hadn't had much to say, they had nothing to talk about and he just wanted to get away as quickly as he could.
He then immediately changed the conversation to give me a blow by blow account of his journey back - complete with car makes and colours and exactly how badly other people had driven on the road. There's a notoriously bad stretch of road between the two places where people drive like idiots (either <30mph in a 50 zone or recklessly fast and all over the place). It was always worth a passing acknowledgement but rarely worthy of a detailed account.
So, hang on, you and this old friend had nothing to talk about? It was awkward and you just wanted to get away? But you spent half an hour talking to him at the side of the road? Doesn't add up. Half an hour is a long time to make awkward small talk for! Either one of them could have made an, "Anyway, nice to see you but I've got somewhere to be!" comment and ended it after 5 awkward minutes... if it had actually happened...
But by the time he'd spent 10 mins detailing the other drivers on the way home, I didn't feel I could go back to question this. Which was obviously the intention.
If he'd said he'd just sat in silence in the flat for an hour, that would have been fine and understandable. If he'd actually popped into X pub to see the landlord, that would have been fine too (and he knows that because hes done it). So why the obfuscation? Why the deflection? Why the lie?