Nick Harwell

Nick Harwell is a show jumper and polo player that loves to play polo. He comes to Amy in hopes that she can help him with his horse who is easily spooked by dogs barking. He later buys Storm from Amy after she decides to give up show jumping. It is later found out that he drugged his polo horse, albeit reluctantly, on orders from his boss.

Season 1
When Nick is in the Diner Val approaches him to suggest he bring his horse Star to Briar Ridge to be trained when he started acting up at the in-gate. He later decides to bring Star to Heartland after a recommendation from Scott. (After the Storm) Lisa asks Nick for a favour and he agrees to coach Ben for show jumping. When he's at Heartland he takes an interest in Spartan and talks to Lou about buying him to jump. He starts coaching Ben and is confused about his ability as he's good but doesn't rank well in competition. He asks Amy's opinion and she says that he never changes or moves the jumps. He tries to change tactics and go back to basics to find the problem when Ben gets angry with him and storms off. Ben later tells Ashley that he fired Nick because he wasn't that good a coach hence him asking Amy's advice. (Born to Run)

Season 2
Nick compliments Amy on Storm, he mentions that he wanted to buy him but Tim outbid him. When Amy decides to stop jumping she asks Nick to jump him. She quickly realises that it would hurt too much to see someone else jump him so sells him to Nick. (Gift Horse) Nick runs into Lou at Maggie's to give her some tickets to the polo and asks Lou about Scott. He later welcomes Scott as the new vet for the polo team, when he thanks Nick he tells him to thank Lou as it was her recommended him. (Holding Fast)

Romantic
Lou

Lou and Nick have a flirtation when they're together. He asks her out for lunch but she cancels when Scott invites her to Mustang Meadow.

Clair

Nick and Clair were married, but split up when his polo career got in the way. He admits to Lou that he wants to change to get her back because he loves her. (What Dreams May Become)