My closest most valued best friend is from uni. We both have loads of kids and demanding full time careers - we live 4hr drive away and get to see each other twice a year - once with husbands and kids and once just the two of us. My old school friend really likes my uni friend - they have met many times and old school friend lived with us for a couple of months in our uni house (25 years ago). Old school friend does keep in touch directly with my uni mate by text etc but they don’t see each other. Old school friend is always trying to get me to see up a weekend away with my uni mate. I don’t fancy changing the dynamic and sacrificing my precious weekend with my friend. If I asked my uni mate - she would probably agree assuming that it is what I wanted. How do I palm old school friend off - this gets brought up every few months - she has form for being controlling. But I still feel a bit mean - although also a bit used.....