THR: Matthew’s proposal indirectly leads to Arizona’s infidelity, in that Arizona glances at Lauren when he’s professing his love for April. How is Arizona’s cheating going to impact the rest of the hospital? Drew: It depends on how many people find out about it in the middle of the crisis. There are a few people who know but they’re in their own trauma situations in this episode. Everybody is in their own world of being badass and dealing with their own drama. It’s not going to go well for Arizona — it never goes well for cheaters.