It's a really tough position and most men would not like it whatsoever and you know exactly why. Just like porn stars, men will date them and think it's awesome until they start to love them and then they don't want them to work anymore. There are people out there who would be secure enough to be fine with it, that are ok with polyamory or are able to differentiate between your work and your love for them, which of them actually means something. I personally think you should be honest from the get go because if he ever does find out and he is madly in love wih you it will destroy him. It sounds stereotypical but the male ego is fragile and that may or may not go against his image of what love and dedication is. He could implode, people commit murder over sexual things and being madly in love with someone. It's your deal and you are in the thick of it but I would personally want to know. I myself am a fucking weirdo and conventional relationships and love are foreign concepts to me so I would take it differently and I hate violence. People can hurt me in the worst way and I will never resort to violence but it is a very real possibility of being completely disillusioned and having your heart broken.