Ryan McNeil was married with Tricia Dennison. Tricia had a sister, Megan Dennison who was in love with Tony Viscardi (the guy who wasn't dressed properly in this episode you mentioned.)
Tony died in January 2000, while he was about to marry Megan - he was hit by Tricia's car - Was it an accident? Tony was a good friend of Sharon's and used to date Grace Turner (until she cheated on him with Nick).
A few months after Tony's death, Megan left Genoa. As for Tricia, she tried to kill Victoria but shot Ryan instead. She's been locked up in a mental hospital since November 2001.