How would you act if you had a male friend who you spent a lot of time calling and texting, and they then told you their wife had found out and was upset by it all as she knew nothing about it at this point? The friendship wasn't inappropriate, but did involve a bit of emotional support and sharing of some private things.
From the wife's pov, she feels it was kept a secret from her and doesn't understand if it was just a good friendship why she was kept in the dark.
Would you feel guilty? Would you reach out to the wife to reassure them that there was nothing to it? Would you continue the friendship? Maybe tone it down? Or would you just cut ties with the man, loose the friendship and forget it?