Spilt beans

If Mark had thought Sarah didn't hear him muttering "Tell me about it", he was wrong, which was a signal for Sarah to get to work again!

Sarah’s ‘getting to work’ involved calling Mark’s mum Victoria, whom she'd met through Jack, and spilling the beans that Mark was ‘seeing someone’. This was like lighting the blue touch paper. Victoria and husband Ted had wondered whether, or if ever, Mark would find someone to settle down with. He had been coerced into bringing home a couple of girls who were nice enough, but both promptly dumped him a few weeks later.