The Togepi in HGSS know Extrasensory, which is a great move, but not necessary for Togekiss.
Lkr said:
how do I find out how happy my Pokemons are? My Pikachu-colored-Pichu needs to evolve already
Talk to a happiness rater. There is one in Goldenrod in the house north of the bicycle shop.
"It looks really happy! It must love you a lot." = 250-255
"I get the feeling that it really trusts you." = 200-249
"It's friendly toward you. It looks sort of happy." = 150-199
"It's quite cute." = 100-149
"You should treat it better. It's not used to you." = 50-99
"It doesn't seem to like you at all. It looks mean." = 0-49