I agree with @
StreetcarBlanche, @
Zevvy. You need to not let yourself involved in this situation, even though I realize it is hard. It is their problem if they do not like each other. So yes, do follow @
StreetcarBlanche's advice and set some boundaries. Hopefully they will understand this!

Sending many safe, warm hugs to BOTH you, @
Zevvy, your Family, your Friends and ALL of your Loved Ones! Keep fighting and keep rocking NO MATTER WHAT HAPPENS, OK?!