Jay is shown as being shy and nervous whenever Nya is around, but he never opens up to her. He finally gets up the courage to ask her out on a date to Mega Monster Amusment Park in the episode Once Bitten, Twice Shy. Unfortunately, Jay is infected by venom and is slowly turning into a snake. Nya is then trapped on a roller coaster by the serpentine that is heading towards a certain doom. Jay hops on with her in attempt to save her. When Nya asks him why he can't untie the chains binding her using he skills that he supposivly learned in a Ninjago version of Boy Scouts, he confesses that he lied about him learning that and only said it to impress her. Nya is understanding and tells Jay that he is the best just being himself, with a kiss on the cheek to follow, he turns back to a 'human'. Better yet, this unlocks his True Potential, and he saves Nya. This makes him the second ninja to unlock it.
Jay is portrayed as being very protective of Nya and becomes very enraged why he learned that his evil duplicate kissed her. He almost faints when he learned that something could change the present and have Nya not fall "head over heels" for him. Nya deeply cares about Jay and thinks he is cute when he tries to impress her. Jay and Nya share quick kisses throughout the episodes.