To not really want to go to flatmate's dinner party?

Idk, why don't you want to go?

What a weird thing - who throws a dinner party in a pandemic

What's the reason you don't want to go?

Unless my presence is required, I don't go to anything I don't want to go to. Say you're tired, order a takeaway and relax in your room.

Unless they're utter arseholes I'd just go

I think that part of communal living is sucking it up and being polite on situations like this.

I wouldn't go. You are under no obligation to.

There should not be guests from outside your property. If there are not, then go.

He's probably only asked you out of politeness. No obligation to go and he'll probably be glad if you say hello and retire to your room.

I think that part of communal living is sucking it up and being polite on situations like this.

Totally disagree. Just because you share living space with someone does not require you to socialise with them and their friends.

Where are you that dinner parties are allowed??

The events I went to that I truly couldn't be arsed to go to ended up being the best nights...

So YABU, give it a chance!

I think you have a headache and are going to rest quietly in your room.

You could always feel better and come out later. Wear appropriate clothing (lounge wear).

How are they having a dinner party if there is a curfew? Are the guests staying overnight? I don't see how its possible otherwise.

Is it allowed where you are? Even if it is, I personally would not come out of my room and i would sanitise the common areas of the flat after they leave.

I'm assuming you are an adult and in a place where the virus is infecting people. Do the right thing. Stay in your room. Say you don't want to mix when it isn't allowed.

I take it you're not in the UK? I wouldnt be happy with people coming into my home just now.

As it's a tiny flat and he/she is your landlord I'd just suck it up and go but maybe make excuses and 'leave' early.

You're obviously not in the UK.
I'd grit my teeth and go, be polite, eat the food, drink the wine and be grateful there's a curfew so it won't go on all night.

"I don't live in the UK but I won't say where I do live, because it would be outing."

If the curfew is at 10 or 11 o'clock (is it too outing to say which one?) then stay out til then, they'll be leaving to go home before then anyway, surely?