I want to make it clear that in the instance of reporting his exploitative behaviour, you would not have ruined his life. He would have ruined his life by his actions, reporting him results in accountability for those actions. He is solely responsible for compromising his life options, ethical credibility, and professionalism NOT you - you would be shining on a light on his behaviour.

I feel very strongly about this and it is getting close to my issues so I won't say any more as I realise you want support and not a debate. I wish you well.