Well, if you are just topless, a lot of guys wouldn't mind. The further you go to bottom less and to interactive, the more guys will be upset. Will he think you loose? Unless you tell him you are a virgin, then he may very well think that. I mean, if you show off to strangers, why won't you put out for him? He may be upset if you are't as sexual with him as you are with those strangers.
A lot of women do get drawn in to the porn industry due to the money, which seems to be why you are considering this, and while appearing topless really isn't all that bad - look at the movie stars who do this - I would be concerned about the life path you are setting yourself up for. A lot of women enter into it to make some money, then find they can't get out, especially if they realize they can't make anywhere near that amount in a more normal line of business. And some women, addicted to the money, will start doing more than just flash their breasts....
My advice is to stay out of the business. Yes, you may be able to make some good money, but I dare say that if all you think you need to do is show some cleavage to make money in the internet porn industry, I think you are wrong. Not many men will pay to see boobies only, when they can make a couple of clicks and get interactive with a fully exposed female.
Please give this some serious thought.