LOL, You are correct :) one more argument for my point why you should never say what you really think of the girl. (unless you are doing RP where you play some fictional character which actually can be your true self. :)
I think some people can misunderstand what I say, as I do not mean that you have to be a totally different person than you are all the time. but if you are not naturally aggressive and dominant it will be impossible to approach anyone as yourself because as yourself you would not approach anyone you would just stay and wait until someone will approach you and that will never happen or if you somehow force yourself approach someone as yourself will have nothing to say because your true self is boring, not interesting to anyone and you know it.
So you actually have to make up something better.
Also just from the practical perspective, your partner will have some preferences and you will have to do that if you want to stay in the relationship, like what if she wants you to send her birthday cards and you don't? this meaningless action costs nothing to do that but it will please you will please your girlfriend a lot and this pointless action may be something she will remember for the rest of her life. and failure to do it may result in the broken relationship which would be great otherwise.
Finally, confidence is incompatible with love as when you really care about someone you cannot be confident, confidence means that you do not give a shit about that person and just treat it as one of infinity without caring what will happen.
Confidence will always come naturally when you approach someone about whom you do not care.
In any case, doing RP is good practice on relationships as you learn what to expect from people.