I am looking for a yaoi manga where a man has an affair with a married woman who he did not know was married. Then the his and catches them in the act.several days later the husband divorced the wife and is now living with the man who had an affair with his wife. The guy then turns out to be gay and a bit of a slob who is releived that he is now divorced.

Kiken na Otonarisan ?

Yes. Thanks!