Well if its against the law,no I wouldn't go, if it were molestation or rape no, or exposing yourself in conduct, anything against the law, if he admits to it then I would not feel safe.
But then again in uU churches some people think of anything between consenting adults as noones business but theres.
I wouldn't leave over an affair, or someone who has a porn addiction, someone who had a prostitute who was 18 or older, nO I wouldn't hold that against them.
Some have addiction issues, dos tuff like drugs and sex at the same time getting a high going to sex parties, then no I wont hold that against them.
I would only stop going if child rape or molestation or unwanted advances had been made sexual assault that type of thing.