Been dating/seeing a guy for about 8 months.
He is lovely, funny, caring and we get on really well.
But.
His best friend is female.
They have known each other for years, and are very close.
She is single, no children, and very attractive.
They spend quite a bit of time together, and I don't think anything untoward about it, but several of my friends do.
I have raised it with him in a roundabout way, and his response is that he doesn't see a problem.
But they got out for dinner a couple of times a month and it is starting to get to me a bit.