If someone has fallen out with you but you're not really sure why, would you ask them

[AcrylicAfternoons]

or just leave it?

i've had people fall out with me who haven't even met me yet. i can't see why i'd need to know, their quite obviously mental.

Depends what sort of friend they are. Close, see them all the time friends, yes I would probably ask. Acquaintance type friends - wouldn't bother. Life is too short.

Depends on how good friends you are

Yes, I would. Either there is a real reason for it and you can work things out or they are being a twat and you know to be well rid of them.

Depends on how close a friend they are and if i am bothered whether to continue being freindly

If I knew them well then I would ask them
If not "sod" them

Close friends yes, acquaintance no. If they aren't good friends you're unlikely to get a truthful answer anyway. Sometimes people just grow apart.

Not close friends at all, But I work with them, so it's quite awkward as I see them all the time and they're clearly pissed off with me.

In that case I'd just ask if it's pissed off rather than just not interested in you. "I get the feeling you're annoyed with me but I don't know why. What's going on as I'd like to get things sorted out?" something like that.

I once had this with a colleague - one week getting on fine, next week cold shoulder.

So I asked him 'have I done something to offend you - like breathe?'

which as a jokey thing broke the ice and brought up the subject more easily. In my case it turned out I hadn't offended him, he just had things on his mind.

No this is definite pissed-offness. Has been going on for a few month.