How to say I love you?

Many ways to say i love you, like giving flowers,cholates,ring,kisses,hugs. but what is the best way? you know i can say my true feelings to her because I'm rehearsing infront of the mirror memorizing those sweetlines "pambola" i'm so brave and confident without her presence. however when you are in the real situation or you've been together you will forget all the things . . .all the Pambola words, you can't speak fluently and you don't know what to do, thats why i can define love-is a feeling that you can't explain that can forget everything . . .