Yeah, I think it will have no effect. Even a noticeable feature doesn't have too much of an effect, e.g. my brother has quite a big noticeable mole on his cheek that he doesn't like, but I don't think it has any effect on his social life.
The most likely way it will affect your relationships is if it makes you feel very nervous or self conscious and stops you believing you can get a girlfriend, in which case your attitude and way of acting changes very subtly, but it makes a difference.
If a girl that you liked had a similar bump, and it took you a while to notice, would it stop you from liking her? The answer is probably no, and most girls will probably say the same as that about you. Try to think of girls as similar to guys in that way. I know there are some differences and different expectations from each gender, but girls also have 'flaws' in their appearance that they worry about, even though guys wouldn't even notice, wouldn't mind, or might even like the things the girl thinks is a flaw. If there are girls that would not go out with you because of it, I would say they are not very mature, and not the kind of girl you'd want to be in a relationship with. Don't forget that, and try to become comfortable and accept everything about your physical appearance, there's no reason why you can't. That way, your behaviour will subtly change for the better, it's not something you notice, but you'll be overall happier.