S04E10 Mood Swings

• Sezonul 4, episodul 10
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• Difuzat duminică, 2 ianuarie 2011
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• 44 min

When an irate Grant, Ty's travel buddy shows up at Heartland to punch out Ty for "kissing Blair" the disclosure puts Ty and Amy's relationship in jeopardy. Meanwhile finding out that their marriage was not legal puts Caleb and Ashley into a turmoil. All the relationship drama makes Lou question her marriage with Peter.