Several times I’ve had an off bet with a close friend and even with my brother and at the end of the day the the agreement were not honored, we get mad at each other initially but at the end of the day we just get over it and didn’t really take it to heart. We know the implications of what this kind of thing can bring to the family, friends and relatives so it’s even more advisable not to bet with a close friend or relative if you know you’re not easily letting go of anything just for peace to reign.
You are very lucky to have that kind of people around you, who do not seem to hold a grudge on bets or unpaid money, because that kind of stuff is what destroys family and friendships here in the country I live in.
Since we are going through a very complex economical crisis, money has become more important than ever and it can mark the difference between death and life sometimes.
I have seen people here who literally commit murder over an unpaid debt of 50$. I assume where you live things are different, so that is good for you.
You should learn from experiences in other countries and previous experiences you have had yourself and never bet with friends and family member ever again. It is not worth it, to risk getting a relationship to end because a relatively small amount of money.