“ I love you" means that I accept you for the person that you are and that I dont wish to change you into someone else. It means that I dont expect perfection from you; just as you dont expect it from me. It means that I'll love you and stand by you even through the worst of times. It means loving you when youre in a bad mood and to tired to do the things I want.
It means loving you when youre down, not just when you're fun to be with. " I love you" means that I know your deepest secrets if you'll let me and dont judge you for them, asking in return only that you do not judge me for mine.
It means that I care enough to fight for what we have and I love you enough to not to let go.
It means thinking of you, dreaming of you, wanting and needing only you, and knowing that you feel the same way for me.
There of course is always more. But somethings are just harder to put in words.