DS is about to move away to live with his GF.
I know her reasonably well, although he she now lives where he's going to, so I don't seen her that often currently.
They've been together more than 2 years, she's stayed at my house many times. DS goes to her parents' often.
Her parents live very close to me. I've never met them.
I can't say that I really "want" to meet them. I try to step back and let DC manage their relationships, but I wonder if I "should", especially now they're going to be living together.
I know my parents were very keen to meet DH's parents as soon as things looked serious between us, but different times...and I can't say that it was hugely successful!