I have few colleagues and friends, and they gamble too. I didn't become friends with them because of gambling, we were cool friend before I dived deep into gambling. Anyway, we do share our wins and loss together, and sometimes we combine to bet on specific odds we feel is better. What I can tell you is that, the aim of having a friend should not be about gambling, even if its a means to earn some extra bucks, there are other ways to make money aside from gambling.