No I have not, Dan, not with anyone on this site. Some years ago, however, I did enjoy a site called World of Card Games and made several new friends there!
Here on Solved, Rooster is the person I have known longest -- beginning 2011 when we were both on Ask.com. Then we were on AnswerMug together, also on Blurtit. In fact Rooster is the one who suggested this site to me, but we have never played board games!