DP's friend's girlfriend.
I buy rounds of drinks for all of us.
DP buys rounds of drinks for all of us.
DP's friend buys rounds of drinks for all of us.
DP's friend's girlfriend has never bought a drink for herself or anyone else.
It's that whole 'couples count as one person' thing, isn't it. Or it could be that she thinks she is so special we all love buying her drinks and she doesn't need to return the favour.
It boils my piss.
DP says don't worry about, it's selfish of her, but he's not going to make a fuss over it.
WIBU to tell her being blonde and skinny and giggly doesn't excuse you from buying rounds?