Should I tell my boyfriend?

Seriously? If you're going to have a relationship you have to be honest. Tell him you've had the surgery. If he decides he doesn't want to be with you after then you're better off. Nobody deserves a guy (or girl) who would choose to leave them based on a decision they made rather than the content of their character.

Jen RNY 2001

You have only known him for 3 months. Why does he need to know your personal business. Get to know him better. This may be a short term relationship. If you decide to tell him, then you will see the real him. You want someone to love you if you weigh 100lbs or 300bs..You don't want a relationship that's based on how you look. Don't move too fast in this relationship. 

She said she just met him. She had surgery 3 months ago.

oh, well she does not need to tell him. She has not known him long enough..

Unless over time the relationship turns to something more serious I wouldn't tell him.  If he would ask then I would tell him but otherwise it is private info.  Imagine if he were the one who had the surgery would you want to know?  If he drops you once he knows then your better off without him.   Why would anyone not want you after you took such a huge step to improve your life? 

trust your instincts. when (and if) it feels comfortable you will tell him. I agree that if that is a turn off then he isn't the one for you. my adult daughter has muscular dystrophy and while she does well she does experience some issues walking and if chairs are too low she can't get out of them without help. she was tired of "wasting time" on dating sites talking to people to just have them blow her off when they found out so now she has chosen to tell people up front when it seems like the relationship might go somewhere. some guys are supportive and others are not. this is a personal decision and you need to do what feels right for you. good luck!