Just that really, but will give a bit of background to pad it out a bit :)
Very old & dear Male friend lives with his DP & where as she's always been a bit of a difficult & odd (IMO) character considering her age - very teen outlook for a Woman of 50
& wher as for friends sake I will happily be polite & make her welcome I do find her very hard work :(
She really does rule the roost (even though he insist not) & is becoming more & more possessive & where as I don't agree with interfering in their relationship as such, I do worry for him a bit as over the years she is pushing more & more of his friends away - recently causing a big bust up with friends of over 30+ years - & last time I saw them it became very apparent that it had only just dawned on her that I was friends with "her Man" independently of my DH - IYSWIM (we've both known him for 30 odd year) - she got quite bristly with me & quizzed my like a Police interrogation - very obviously implying she thought I'd slept with him in the past
- she's even done the same with a mutual Lesbian friend 
& where as I think in part its just her personality
its DEFINITELY getting worse as she gets older -- I can't contact her directly, as she thinks the internet is the Devils spawn - if I'm honest I don't want to ring her, as I don't want to get into a situation where she thinks I'm her best buddy, because we are not & won't be as she is just too different in her out look to me -
so I e-mailed said friend a bit of info about a magnetic gadget I am finding really helping with perimenopause symptoms, & now several other of our friends are also trying & think its great as it works :)
He came back with a very brusque & dismissive e-mail - you might need that early, but I can tell you for nothing it does not apply to XX 
AIBU to think he is in complete denial 