Back in June, I started seeing a lovely man and all was fine. He mentioned he had an ex partner, a woman he split up with three years ago, who was just a good friend. I had no problem with this, given the length of time since the split, and I appreciate that you don't lose fond feelings just because a relationship doesn't work out.
However... a couple of months in, it became apparent that he hadn't told her about me - despite meeting up with her 3+ times per week - and also mentioned that she wanted to rekindle the relationship - but that he didn't because of incompatibilities between them. I didn't worry about this, early days an' all that, until he refused to accompany me to an event a while after that, on the grounds that friends of hers might be there and see us together. It was at that point that I told him that I wasn't prepared to be his 'dirty little secret', and eventually he did inform her.
Almost immediately, she started a new relationship with another guy. My partner was devastated, stepped up the amount of contact he was having with her, checked very frequently on her FB page... all that. She is going on holiday with her new guy as of tomorrow, and my partner is still really upset - whilst telling me that they're "just friends".
To me, it feels as though they never actually stopped dating - though I do believe him when he says it's been years since they had a physical relationship - and I think he needs space right now to heal from his broken relationship. However, I don't want him doing that at my expense.
I really don't know what to do. Any thoughts?