What do you do when... (and an AIBU aside)

[Octoplatypus]

...you’re pretty sure someone/people are talking about you behind your back but have no hard evidence. E.g. whispering that stops when you enter the room, talking low enough to be just out of earshot and the conversation is wrapped up sharpish when you move closer, sudden decisions to go for a walk together and you’re definitely not invited.

It’s a houseguest situation (a couple) and they’re the guests. Do I confront or wait for them to leave? It’s one of those, the more I think about it, the crosser I’m getting situations.

And an AIBU just for good measure:

You order a takeaway. You all order your own things (Smithy style) but 2 meals are the same. In the morning, some of your meal is in the fridge. You ask what it is, the person that dished up the takeaway says it’s leftovers from your meal. It’s clear that you’ve just shared the other person’s meal with a bit of yours added on. AIBU to say that I wanted the whole fucking meal that I ordered?! The other person is on a diet and it’s clear the person dishing up assumed I wouldn’t want all my food either. AIBU to feel cheated?

Obligatory namechange warning

Scenario 1 - unless you hear something specific, I would wait for them to leave. For all you know, they are having a protracted and awkward ongoing row in hushed tones whenever you leave the room, but I would just never invite them back either way.

Scenario 2 - Not sure I understand - did the person who dished up eat most of your meal? Because if that was also one of the guests, then it just reinforces my position on not inviting them again! If they just dished up enough from either/both meals for each of you then I'm slightly more forgiving, unless you were feeling short-changed on the night, but then I think the onus would have been on you to say 'Where's the rest' or at least ensure that all the leftovers came your way.