We don’t see the conversation between Naomi and her father's lover so it's unclear if she's right about her pop's actions, but the news is enough for Tracy, who appears devastated that her husband lied to her. If Tracy and Charlie did have a working open marriage Tracy a) wouldn't have believed her daughter because she'd know the status of her husban's relationship with the other woman or b) would already know that Gail was moving in to the family's beach house.
We'll have to wait until the next episode to find out how the Clark's relationship evolves, but we're hoping it turns into something interesting, and not another lying, cheating tired soap opera stereotype.
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