I agree with LMK74. No need to say anything until such time as you think there may be a future in it. Let him make up his mind about a future before revealing your cards. Then, he will either stay or run and what will be will be - either he is meant to be in your life or not. Don't stress about it, just let nature take its course, as it were.
Me ? I am not in the market yet but if any man had a feel and discovered one boob feels different from the other (not that I think any of them are too bright !) then I'd have to say something as I have one fakie.
Relax and enjoy dating.
Summer :-)