Hello Les,
Sorry if my 2p worth is inappropriate - it's not like I comment that much on here. But I read and enjoy this thread, and your stories, and was pleased for you that you'd found someone. You sounded happy.
It can be easy to feel like someone doesn't trust you when they question a situation. I think I'd feel hurt (and probably a bit betrayed) if I found out my guy had been communicating with another woman and they were planning to meet up, especially in such intimate circumstances. You know your intentions, and Karen might trust you - but she, like most of us on here, might be suspicious of Olga's motives...
If you hadn't met her smart-arse colleague, and she'd said she was off to share accommodation for 6 weeks with him, would you be happy with that? Would it mean that you didn't trust her, if you weren't? Or more that you didn't trust him and the situation?
I don't know full details of course, but is it worth talking to Karen some more about it? It seems like you care for her. I agree completely that if you can't trust each other there's not a sound basis for a relationship (or more, if she doesn't trust you), but sometimes it takes time to work out what that means, especially in the early days. Because it seems to me that people on here were saying 'Go Les, that's great news!' when you told us about Karen, and the same people are saying 'Hmmm, be careful here mate' about Olga. (Aka don't trust her?) Maybe that's not so far from Karen's reaction. We might all be wrong - and let's hope we are! - but might it be worth talking to Karen about it?
Sorry if that's a bit rambling and you feel I'm sticking my nose in, but I just felt concerned for you on both counts.
With all good wishes,
Madeleine