Love
I can tell that Merry loves Estella because he goes all glassy-eyed and smiley at the merest mention of her name. It's not the tightly controlled smirk he usually wears. That smile hides his feelings behind perpetual amusement. This one is gentler, softer and spreads over his face like the morning sunshine. Sam says it's about time Merry settled down. Sam's usually right about such things. I try to be happy for him, but my heart feels like the world is twisted and if I'm not quick, Merry will be lost to me.
Sam says sometimes love feels like that.