I meet up with some other mums once a month or so, we met at a mum and baby group which our toddlers have grown out of.
We meet for lunch, usually at a local cafe. When we started meeting, about nine months ago, the five of us would usually have a soft drink and sandwich each. The bill would arrive and we'd split it equally, all having had pretty much the same. However, as times gone on, one of the mums always seems to get there early and has an extra couple of drinks before and during the meet up. Another of thr mothers sometimes has extra and a couple of us tend to just have a drink and sandwich still. When the bill comes, those who have extra seem to want to split it evenly still, then after its paid they say, 'oops I had more I should have paid more', once the bill's been paid....
So last week I threw my £10 in when the bill arrived and said 'that's for mine and a 10% tip'. I was met by slight surprise and glares as the others worked out what they owed.
Aibu in not wanting to split the bill? It would only be an extra fiver or so for each meet, but money is tight and I'd rather spend it on dc. These mums aren't close friends but I do like catching up with some of them. I suspect some of the others who have less don't like splitting the bill either as they sometimes pay indepently at the counter...