Which relationship red flag would actually send you running for the hills?

That suspiciously active WhatsApp thread with someone they swore was ancient history. Innocent friendship or emotional affair in waiting?

Charming to you, absolute nightmare to the poor soul bringing the drinks. How someone treats staff says everything about who they really are.

In this economy it's practically sensible, but there's a difference between saving for a deposit and never having washed their own pants.

Sweet at first, terrifying by month three. If nobody else can stand them long-term, there might be a reason.

Somehow manages a full-time job but can't operate a washing machine. The laziest form of domestic manipulation going.