A work relationship question

[Meredairycowslip]

There's a work relationship thing that I'm confused about and would like some ideas. I'm generally not too good at reading social cues but I'm aware enough to notice something unusual.
Having recently joined a new workplace I was allocated a member of staff to train and mentor me. He is a lovely man, extremely attractive, and I've noticed gets along with everyone.
When I first started, a couple of people didn't really pay me any attention, one guy blanked me when I said hello straight to his face although most were civil, as is the case when you start somewhere new.
Suddenly people are starting to be nice to me. I don't mean polite nice, I mean really, really nice, like I'm a wonderful friend they've known for a while.
The only sense I can make of this is that it is by association of me being seen with my mentor. Do you think this is the right explanation?

Maybe he's bigged you up - people have said 'oh what's new girl like?' and he's said you're lovely?
Maybe they thought you were one of a long line of temps, but now they see you're permanent with a mentor?
Or sadly yeah, maybe they want to curry favour with him by not being an arse to his mentee

Guy that blanked you is still a douche though. It costs nothing to say hello or smile.

The guy that blanked me was one of the weirdest of examples as the next time I saw him he gave me such a huge smile, like Beyonce had just walked in (I'm no Beyonce!)
The curry favour explanation could be right actually, he seems to be very well-regarded. I've noticed a slight apprehension or timidity if that's the right word from some other men when they speak to him.

He may have noticed some people being off with you and mentioned that since you are new they should really try get to know you before actively dismissing you. He sounds like a good mentor looking out for colleagues.
I’d take this as an opportunity to get to know them and be friendly back.

He might just be really bad with faces and didn't recognise you or was off with the fairies. Before me and DH got together he was really insulted once because I "blanked" him when I walked past. Once he got to know me he realised I had just been off in my own world and never even noticed him lol. Now you've been there a bit longer people might just be more comfortable with you and more likely to recognise you.

This is way too much thought about a few innocuous interactions

Maybe after some mentoring you appear more confident. Your body language might have changed? Feel good about you and don't put power in someone else's hands.

I don't think my body language has changed. This change has happened quickly. I'm not saying I'm not likeable in my own right. But every other place I've been it takes time to build relationships. I probably am giving it way too much thought but only because it's very unusual. Been wondering if people genuinely look up to him or are scared of him actually.

@Meredairycowslip

The guy that blanked me was one of the weirdest of examples as the next time I saw him he gave me such a huge smile, like Beyonce had just walked in (I'm no Beyonce!) The curry favour explanation could be right actually, he seems to be very well-regarded. I've noticed a slight apprehension or timidity if that's the right word from some other men when they speak to him.

I think you are over thinking this. Perhaps he was just pre occupied the first time.

I am not really sure what your issue / question / concern is to be honest. “colleagues are being nice to me?”

What sort of work is it?

Colleagues blank me one day and chat warmly next day if it helps. I’m too busy to care what the reason and it’s usually just that - they are busy, preoccupied or whatever.

Do you overthink a lot or had a bad experience in another workplace?