My brother & his lovely girlfriend split up in February. (Sob! We all miss her!)
It was her decision to go for a number of reasons. They both moved out of their flat, split the stuff and moved on.
My brother has just got a return to sender credit card bill. They got it together to buy furniture, paid it off, and then it appears she used it to get him a stupidly expensive Xbox for Christmas... But now isn't paying the bill.
He said he should message her and ask her to pay for it, I said just take it as a loss and pay it yourself, as it is in your name despite the fact she was paying the bill till now.
What would you do? He said his reasoning is that he didn't ask for it (although he does use it) and he bought her presents too that she has kept that he paid for.