Gun lae gun is a song that Mew wrote for Tong in the movie "The Love of Siam" which roughly translates to "Together Forever" or something to that effect. Looks like Mew, Witwisit "Pchy" Hiranyawongkul in real life, still carries around Tong's Christmas gift. Aww. (Not sure of the context of the photo and it seems like this was taken a year or two ago.)
Still fanboy-ing LOS. I know, Nurse Betty much.
Photo from Pinoy Exchange thread: Mew of the Love of Siam.