4x21 - Heartbreak High

When Blair asks Katerina to partner him in a competition piece she soon finds herself falling for him and the feeling is obviously mutual. When Kat discovers that Blair is married with children, she must decide if she will continue to see him or dissolve the relationship. Having to vacate the warehouse for an evening, Mai asks Ryan if she can stay the night at the Scheppers. Both have different ideas of how the evening should go and neither is right! Hilary is not impressed when she returns from night shift the next morning to find Mai leaving — how will Ryan explain this one? Meanwhile, Drazic has been assigned his community service job and is mortified to find out he is to be the lollipop crossing guard at the local school crossing. Melanie, annoyed that Anita is still in love with him, puts her energy into doubling Drazic's embarrassment.