As you probably already know, one gesture from a character can communicate more in an instant that anything they might say in a paragraph of diagloue.
Here is a nice little case-in-point. Behold the music video for “First Day of My Life” by Bright Eyes. Notice the many, many ways these people are conveying their love without uttering a single word (a nose on a shoulder, stroking a forehead).
G’head. Mute it, even. I dare you.