<Tr> <Td_colspan="7"> Lou puts a brave face on lingering insecurities when former coworkers from the high - powered career she gave up in New York become customers at her corporate equine retreat . Caleb bails on leading the trail ride because it would have meant Amy and Ty could have a romantic evening alone at the ranch . Amy helps Lou instead and takes Copper, who is a better trail horse, despite Mallory's protests . When Amy is gone, Mallory does a bit of jumping on Spartan, then takes him on a ride . While checking a log on the trail to make sure it's safe to jump, Mallory doesn't notice Spartan leave . She finds him grazing at the side of the road relatively quickly, but doesn't notice the signs indicating recent pesticide application . Once they return to the ranch, it becomes evident something is wrong, which Ty correctly guesses to be pesticide poisoning . Ty looks into Marion's notebooks, and gets Mallory's help to mix charcoal and water . Caleb and his friend Kit, who Ty met accidentally while she was bathing in the pond early that morning, show up . Ty explains the situation, and they get Spartan to drink all the jugs of charcoal water together . Meanwhile, Lou's friends work out their problems with each other, themselves, and their love lives, on the overnight trip that Lou, Tim, Amy, and Jack took them on . Lou's friend Lauren kisses Tim, who pushes her away, and Lou becomes upset with her friend . Lou admits Scott said no to her proposal because he wasn't sure, and that she doesn't know how they stand now . At the end of the trip, Lou feels bad for the fight that happened among the girls the previous night and tries to apologize, but the girls say it was therapeutic, and they will be sure to spread the word in New York about the Heartland Equestrian Connection . </Td> </Tr> <Tr> <Th> 19 </Th> <Td> 6 </Td> <Td> "Holding Fast" </Td> <Td> Tim Southam </Td> <Td> Susin Nielsen </Td> <Td> November 9, 2008 (2008 - 11 - 09) </Td> <Td> 206 </Td> </Tr> <Tr> <Td_colspan="7"> Out for a ride along the river, Amy comes across an RCMP officer trying to save a young boy from drowning . She tries to help his horse, Venture, who has developed a fear of water . She discovers the connection to the trauma of Constable Rodriguez's brother drowning six years earlier, for which he still feels responsible, and ends up helping both the horse and the officer . Lou goes to a polo match for Nick Harwell's polo team, as he gave her a number of free tickets, and upsets Scott when Nick talks about hiring him and Lou praises his work . Scott and Lou talk about the state of their relationship, and they break up for real . Lisa tries to convince Jack to go to the polo match with her, but he refuses . She even goes to the trouble of getting him a new suit so he won't stand out, but he still refuses . But he shows up just as the match starts and apologizes to Lisa for being so stubborn . Ashley takes Caleb to the polo club with her and shares her new pursuit of barrel racing (which Kit is teaching her) with her mother's friends, much to Val's chagrin . Ty asks Amy out on a date, but she already has plans with Caleb . Mallory tries to get rid of Jake, using lame excuses to avoid seeing him and ignoring his phone calls . Jack facilitates an honest conversation between the two, frustrated with their beating around the bush and hoping to get some peace . They walk off together, with Mallory reiterating that she is not a "buckle bunny". </Td> </Tr> <Tr> <Th> 20 </Th> <Td> 7 </Td> <Td> "Sweetheart of the Rodeo" </Td> <Td> Steve DiMarco </Td> <Td> Leila Basen and David Preston </Td> <Td> November 16, 2008 (2008 - 11 - 16) </Td> <Td> 207 </Td> </Tr>

What episode of heartland does jack and lisa get married