So I learned that my 'friend' of many years had cheated on her OH of many years quite a few times. I never knew and I know her OH didn't either. I've remained her friend since this came to light a few months ago, but it's a very different friendship than it was. I'm trying to hang in there and be the best friend that I can be. But I just can't condone her behaviour, and now she's told me that she tested positive for HPV after a ONS like more than 6 months ago but didn't tell her OH. AIBU to think she MUST confess?