I’m going to snitch on my best friend’s who is having an affair

DEAR DEIDRE: I’m about to spill the beans on my best friend’s affair with a married man.

She’s infuriating, wandering around like a love-sick puppy whilst this poor man’s wife is oblivious.

She’s 41 and she’s always been unlucky in love. I’m a man of 42 and we’ve known one another since we were at university. We’ve been through a lot together but we’ve only ever been friends. I look out for her and I’m always there to pick up the pieces when her latest relationship goes wrong.