our old play partner became my emotional rock during the divorce... is this developing into something more

ok so we had this couple we played with for years. wonderful ppl. when my marriage imploded the husband of that couple ended up being one of the few ppl i could really talk to. weekly coffees turned into longer convos turned into texting daily. his wife knows and is supportive bc they're an open couple obvs. but now im like... is this just intense friendship in a crisis or is something else happening here. and how would that even work given the history... feeling confused. johannesburg