AIBU to think this means he doesn’t fancy her.

[Whatdoesthismean1234]

My DSis has been talking incessantly about her senior manager. They’re both single, he’s late 40s and she’s early 30s. She’s very attractive and apparently, so is he? They’re constantly texting out of working hours, she’s shown me messages during which they talk about how much they rate each other, how close they are, about their connection.

They had been due to attend a conference in the coming weeks - just the two of them. Now the senior manager has decided to invite other team members and he’s encouraging everyone to travel with them on the weekend, rather than being alone with DSIS. Entirely his decision. DSIS is devastated.

AIBU to say that this is a clear signal that he is no interested in her? I have suggested this and told her to move on and stop fantasising about an imaginary future. She’s angry with me.

Was I BU?

Sounds like he realises he has been unprofessional (as her senior manager) and doesn’t want to risk going any further. So he can’t be that into her, as you suspect.

Never get your honey where you get your money

Advice for life that is, speaking from experience it’s a fucking nightmare

She’s devastated, I’m not sure she’ll be able to pretend nothing is wrong when she sees him.

Maybe he’s just realised he should be working at this conference and not be away solely with one woman (who he’s probably been caught flirting with) thus setting tongues wagging. He’s probably just trying to appear more like his d* isn’t ruling his professional position.

She's devastated why? Did he promise a wild sexy weekend full of champagne and endless rogering?
She's investing too much on the basis of some mild flirting.
She's a grown woman who can take control by laying her cards on the table and having "the talk".