obtusive relationship - They’re both too cheap to break up, so they keep pretending

They’re both too cheap to break up, so they keep pretending they still want to be together.

'I’m not paying for a breakup, I’ve got bills to pay.'

'We’re like that last piece of cake, you don’t want to eat it, but you don’t want to throw it away either.'

'I’d rather fight you than pay for a new relationship.'