...Season 4, episode 62. titled, "Go! ". They also キッス in the movie, "Trouble in Tokyo", but that doesn't count as an episode! (plus ROBIN X STARFIRE FOREVAH ^_^)
oh yea! and she learns any language through lip contact, so thats how she learned japanese in trouble in tokyo. But they do キッス out of 愛 in trouble in tokyo
Starfire kisses Robin to learn English, in the episode GO! They キッス in Trouble In Tokyo, at the end, and finally become an official couple. In the GO! version, they don't kiss, though in the episode 'Dreams', Robin dreams of it. In the episode 'Puppets, Whaaat?' Robin makes the puppet of himself and Starfire キッス three times.
Yes, in "Go!"(Episode 62) they do but that's only because Starfire needs to learn English. But in Teen Titans: Trouble in Tokyo (the movie) they キッス after the battle with Brushogun's main ink monster.