How can I be the perfect boyfriend?

Be you. That's all there is to it. If she can't appreciate what a good guy you are then she doesn't deserve you.

Just be yourself. the only time its good to change yourself.. is if its for yourself. and for the better. just be honest, seriously, don't lie to her. because of she finds out that you lie about things, then its going to be hard for her to trust you. make sure you tell her how you feel about her, even if she already knows.. she'll still like to be reminded. don't be an ass to her. I know some girls like guys that treat them badly, [and I'm not sure why], but if she's a girl that likes you for you, and that likes you being nice and stuff then she's one you shouldn't let go of.

Don't be perfect, if you give her that illusion she will always expect you to be perfect. and it would only end up ruining your relationship. You have to let her know that everyone lets other people down and you will let her down - but you won't do it intentionally. A guy can't do everything and don't let her put that expectation on you, but do what you can. Communicate, and I don't mean be a man of feeling, and don't go crying and complaining, but tell her what is important to you, and ask what important to her. Never lie, unless it is a surprise birthday party ;) Learn what words mean to each other, so that you don't end up fighting over ridiculous stuff. She is obviously thinks you are good enough so show her who you are effectively. It is all about perspective.

As cheesy and cliche as this sounds, be who you are. don't change to be the "perfect" boyfriend if that's not what you are. since she's dating you, i'm assuming she likes you for who you are.

Be yourself. If she's going out with you chances are she likes you how you are.

She might be tired of the type of guys she dated in the past, and likes you because you are different. Don't change who you are thinking she wants something else. If she wanted something else, she wouldn't be with you.