In comic con panel 2011, johnny 発言しました that his first screen キッス was with mayin...

Back in the 90's Mayim was on a 表示する called Blossom. Johnny guest starred on an episode of the 表示する as a guy she kisses at a party.

Here's a video if あなた want to see it. The キッス happens around 1:40 but if あなた want to see the lead up to the キッス that's around :48.