Another moral dilemma 🙈 a friend has been seeing a man for a few months, it seems to have got serious quite quickly and they’ve already booked a holiday together. She seems really happy with him (both been married before and have grown up kids). I was out with another friend (friend 2) last night (she doesn’t know friend 1) and we went into a bar where friend 1 was out with her partner and a group of friends. He walked past us to go to the bar and friend 2 made a comment about him being a shit (not knowing he was dating my other friend). When I asked what she meant she said he was in a relationship with a friend of hers up until a month ago, cheated on her with his ex, and her friend was really cut up and they’d now split. This means he was seeing my friend whilst in a relationship with her friend and simultaneously sleeping with an ex! I feel like I should tell my friend what I’ve found out (friend 2 is a reliable source and saw photos of her friend with this guy over xmas while he was also seeing friend 1). I don’t want to be the one to burst her bubble as she seems really happy but I feel she needs to be on her guard. WWYD?