I had some great friends back in hs but my friends from uni are my life long ones. I ended up meeting people from my dorms, clubs, parties and ofc class. Will be 15 years this May since I've graduated and still have many close friends from back then. Of course some have moved and we don't hang out as much due to work, families and life but we still do our thing every so often. Luckily me and my best friend from then are still really close and prior to covid we hung out almost weekly.