She posted a pic of her new car on facebook. My DP commented about it. She replied, addressing him as an affectionate nicknamey version of his name (eg DP-y). He replied again, offering to "take her for a spin" in his car, with a kiss on the end of his message.
She's sort of a friend of his, but not a close one - more of a friend of a friend, to be honest. They never hang out, just the two of them. She is absolutely stunning, intimidatingly beautiful. Everyone seems to be after her.
Of course, he must find her attractive, there's no way on earth that he wouldn't. I get that. I do feel very panicky at the idea of him actually being interested in someone else though and that little FB exchange has unnerved me slightly. I really hope I'm being unreasonable!