Well, nigel I didn't have a proper ride out iykwim
but I did give my stables a thorough mucking out 
That's a very good question mix
And I supposed the answer is, I don't know for certain.
I guess there are some hints at red flags now you ask directly.
He travels for work so is unavailable at times (though has never left a message unanswered for more than a couple of hours during the working day)
We do chat throughout the day a LOT! If he's at home with the missus she would definitely notice.
It rings true when he talks about his dc. And has talked lots about wishing he had more time with them.
I haven't mentioned the reason I'm single, or what LCB did. I don't want to talk about that yet. So I guess I've avoided asking him about his last relationship so he doesn't ask me about mine.
I guess I am more naive than I thought 
And he could be wondering if I'm married too I suppose.
I will ask him straight out though as I'd hate to think some poor woman is feeling what I felt during those months of knowing but not knowing.
I feel bad for not asking him outright to his face now
and annoyed at myself.