All of this information was found at Y&R Online Who's Who In Genoa City (http://www.soapcentral.com/y&r/whoswho/jt.php).

Thad Luckinbill joined the cast of The Young and the Restless as J.T. Hellstrom in November of 2000.
Raul Gutierrez, Billy Abbott, MacKenzie Browning, J.T. Hellstrom, Rianna Miner and Brittany Hodges were friends as they attended Walnut Grove Academy. When we first met JT he was dating Brittany. We don't know much about J.T.'s parents, but they must be either unconcerned with his life or very liberal. JT has quite a reputation as a ladies man and major partier. He did just enough in school to get by.

Snobby rich girl Brittany saw her chance, dumped J.T. and snagged the Jabot heir Billy Abbott as her boyfriend. J.T. then took up with Rianna and treated her pretty shabbily. Billy bragged of his experience with drinking, partying and girls while living in New York City. One evening J.T. invited everyone to a party at a house he was house-sitting. Raul showed up in time to save best friend Billy's life when he suffered alcohol poisoning and collapsed in the snow, as Brittany nor J.T. were willing to call 911 and get themselves in trouble.

Billy, Brittany, Raul and Rianna were chosen as the Glow by Jabot Kids as a summer promotion for the new Jabot teen line. Mac assisted Phyllis Summers running the website featuring the kids and J.T. heckled from the sidelines. Rianna and J.T. broke up, and everyone got to witness Raul and Rianna get together, share their first kiss at the Abbott's poolside, and fall in love live on the website. Their relationship seemed it would last forever. Brittany discovered that her boyfriend Billy was involved with Mac, so arranged for Mac to walk in on her and Billy "making love." Billy was drugged and Britt was faking it, but Mac believed what she saw and it broke her heart. Billy tried to defend himself, but couldn't remember what happened. Britt's on-again, off-again ally, J.T., spilled it that it was setup for Mac to see, tapes of the actual scene were found and exposed, but no one realized that Billy was drugged. Brittany was hurt, but eventually took Billy back. During this time, Mac confided in J.T. and he found himself falling for her. Then Mac and Billy began being drawn to each other again, but it wasn't until Jack arranged for Billy and Mac to be trapped in an elevator at Jabot that they realized that they truly belonged together. Although Billy did his best to be a jerk to turn Mac away "for her own good", they eventually reconciled and became a couple again. Raul seemed to be coping with his diabetes, then began acting strange and angry, got careless with his medication and lapsed into another diabetic coma with Rianna at Crimson Lights. This time after he recovered, Raul tried to break things off with Rianna "for her own good". Rianna convinced him to stay a couple until Raul discovered that when she dated J.T. it had included sex. Raul couldn't handle it, and suddenly demanded sex with her himself. Rianna was outraged and broke off their relationship.

Senior year began, and a holiday series of the Glow By Jabot website added J.T. and Mac to the Glow Kids and Colleen Carlton to Mac's place as assistant to the webmaster. The scene changed to Jabot where a boutique opened which was run by the kids. It wasn't long before Rianna resumed her relationship with J.T., convinced that he had become a better person. Since then, Rianna watched Raul change. He didn't seem to care about anything as he once did. His grades plummeted as he tried to play irresponsible, then started hanging out with Brittany who by then had broken up with Billy. All the Glo kids were turning 18 and sending out college applications. But Raul put off his college essay until the last minute then submitted something way below par. Rianna gave herself to J.T. again, sure that this time he really cared. But he didn't, and was just using her again. Once Rianna figured this out, she arranged to graduate early and tale an internship in Europe. By the time she left, she and Raul had become friends again.

Brittany won the lead in the school play "Much Ado About Nothing", with Raul's encouragement. While practicing lines backstage together, their hints of romance finally came true with a passionate kiss. When JT, who was the male lead, didn't show up opening night, Raul stepped in and the play was a big success. When her parents didn't show up for the play, we began to see a vulnerable side to Britt. All the shenanigans the self-confident, gorgeous blonde has pulled have been covering up a girl who feels unloved and unworthy of someone who would want her for more than her body. Through all this, J.T. was both Britt's confidant and heckler. He thought he knew her, but he really didn't.

Just as Raul and Brittany had begun to get close, Brittany succumbed to the fear of being loved and not in control and suddenly dumped him. She began dating J.T. again and flaunted him in front of Raul trying to hurt him. Rianna returned to Genoa City just in time to be Raul's date for the prom, and helped Raul finally get Britt to admit that she cared.

Raul was accepted to Penbroke College in Boston and won a scholarship. Brittany was bound for another college in New York. But they ended up staying in Genoa City after Raul was paralyzed in a car crash. Billy decided he needed to do more with his life than go to college, so left for Louisiana to help Mac's father, Brock, build houses for the poor. Mac later left Genoa City that fall to attend college. Due to J.T.'s poor grades, he ended up going to Genoa City University. Too much partying all summer left J.T. lacking the books he was supposed to have read prior to starting GCU. To the rescue was 15 year old Colleen who had a crush on J.T. She had read all the books and tutored him in what he'd need to know. J.T. enjoys her company, but has no intentions to deflower the young teen. But due to J.T. now being a college man, and his reputation with the girls, John has forbidden Colleen to see him. She was sneaking out and defying him until J.T. asked her to follow her grandfather's rules.

However, after trying twice to stay away from Colleen, JT realized he couldn't. He had real feelings for her. After stopping Colleen from going back to New York with her mother, Brad has now told JT he can't see Colleen for 2 weeks. However, on her 16th birthday, which fell during those 2 weeks, JT talked to Colleen on the phone, and later gave her a card and her birthday present - he sang When You Say Nothing At All and played the guitar to her in her backyard.