Hayley Powers

Hayley Powers appears first and last in Season 6 Episode 7 "Life is a Highway".

Chase Powers returns to the series and appears to have married Hayley, who is so stunned by Amys free riding, that she asks her for training on her horse Roxy (which Chase gifted her).

They have only one session until Amy decides to quit training her due to Chases' and her past and him acting quite strange. It turns out during the episode that Chase not only never told his wife about the show he held with Amy, but also lies to her about what's happened between Amy and him. She ends up with the false knowledge that Amy had a crush on Chase but he did not. He also tells her it was his idea to cancel the training on Heartland.

Chase comes to pick up Hayleys horse and tries to kiss Amy again. She slaps him and Chase leaves, embarassed. They are shown next as Chase seemingly tells Hayley the truth about him feeling unhappy in his marriage and the way of life Hayley wants to live. It turns out he lied again as Hayley turns up on Heartland accusing Amy that she "destroyed their relationship" and "told him that he might better leave her". Amy is confused and tells her that this is not true. She asks her, if she hadn't known that Chase would always prefer the road over a home.

It turns out Chase "followed Hayley until she had nowhere to go" (as she says), and was originally just an affair. She would've been happy with it, but somehow ended up marrying Chase. How that happened isnt explained further. Amy tells Hayley that Chase does indeed love her, but telling him to settle would be as if she asked him to retire, and that maybe she should follow her husband.

They are both shown one last time as Hayley has her bags packed and asks Chase to help her. He asks if she is sure, and she tells him she is. Also she tells Chase that she is pregnant - but is not there because of the baby, because she could also raise it on her own - but because she really wants to stay with him and "it would be more fun with him." Chase seems to be happy about the news. They hug and drive away, never to be seen again in the series.