Harley (played by Robbie Jones) is the hidden main antagonist in Temptation: Confessions of a Marriage Counselor.
Harley first appears at Judith's (the protagonist) place of employment and is clearly attracted to her. He tells her that he wants to invest in her business, and they start spending time together, causing Judith to become attracted to him as well, though she does her best to hide it. One day, when they go out and travel, Harley kisses her, and they begin having an affair, which creates a rift in Judith's marriage, and also her relationship with her mother. As the affair progresses, he becomes controlling and abusive towards her. Towards the climax, it is revealed that Harley has HIV and gave to his former wife, Karen (who goes by Melinda), which means Judith now has it too. After a fight with Judith, he is attacked by Brice, who warns him to stay away from Judith and Melinda, and leaves him there. That is the last we see of him.