AFAIK they've been together about 2 months, although he didn't tell me until very recently.
They've had a weekend away and he seems to know her parents. They both live at home, she's younger.
He drives, she doesn't and she lives about 5 miles away in a "nicer" town, so he'll drive there and they'll go out there or spend time at her house.
I've only met her once for a few minutes when they popped in on their way elsewhere. She seems nice, much more confident and outgoing than him, but they were nice and lively together. It was lovely to see a bit of life in him TBH and I'm thrilled that he's actually living a bit after the year our young people have had.
I am a bit sad that I don't see my little boy from one week to the next though. He's either working or with her. I get that, as I said I'm pleased for him and I understand it has to happen, but why always at her house?!
I know there's nothing to do about it, I'm just getting it off my chest 
It's a bit more poignant because DH, his dad is dying. I've tried not to rely too much in DCs to help with his care but it's getting harder and I can't move him on my own now and with DS1 never here, it means all the care is falling to me and DS2.
I understand why DS1 would prefer not to be here, but I do worry that he'll regret not having spent more time with his dad later.