I never did gambling with people I just met, so I never got friends from gambling. But gambling with friends often happens, but only with old friends not with new people known.
IF you can call betting with as gambling, We sometimes bet money on who will eventually win in soccer console game, that's how my friends and i gamble.
With my friends I do that all the time, its not necessary to be in money, winner gets alcoholic drinks, chocolates, dinner's. It depends how many of us play and we have different prizes. We also play poker if there as more then 5 of us, then we have micro buyins, nothing special around 1 $ for 1000 chips and with infinite rebuys.
Other then that I have moments when some friend comes and we try some roulette or slots, also poker we discuss hands before we call or rise, fold what ever..
Gambling can be social activity, but sometimes its better when I'm alone, I can relax more and follow my own strategies without any interference.