The Truth Is Out There... and It Hurts - S1-E8
Piper: Leo, how do you feel about women who make the first move?
Leo: I don't know. I'm still waiting for it to happen.
Piper: Goodness.
[Piper grabs Leo and kisses him.]
Leo: How do you feel about guys who make the second move?
Piper: Love 'em.
[Leo leans in and kisses her.]