One month ago, learned that school friend's partner of 8 years had walked out on her and their two young kids. Have now learned that he left her for another friend of mine that he only met three months ago and saw twice a week in a social capacity (through a hobby).
My school friend didn't see this coming and thought all was well. Her ex-partner has not moved in with my other friend, they are just "dating" although it is clear that while there may not have been an affair before he walked out, his head was turned by my other friend.
Obviously I don't know all the ins and outs but everyone is surprised he left, there were no outward signs things weren't good. Obviously, I don't know if there was any physical affair - my other friend doesn't seem the type but she will have known he was in a long-term relationship.
These things happen, of course. But I am understandably torn and feel very "piggy in the middle" and wonder how on earth I can juggle both friends. I obviously want to support my school friend but would understand that she may well have an issue with my friendship with someone she may now see as "the OW".
Advice?