It is a sudden change of pace for the hard partying hotel heiress, who was arrested in Las Vegas in August with cocaine in her purse. “Cy is a dad and he is combining his part time parenting duties with his fledgling romance with Paris,” said a source close to the couple. While Paris is not yet officially a ‘step-mom’, she has made no secret, in the past, about wanting to become a mommy dearest.

“It has been my dream to have four babies by 30,” the heiress, 29, said a few years ago. And Hilton thinks she is highly qualified for motherhood, explaining, “I look after animals, so I’d have a lot to give my kids.”

Paris and Cy Waits have been dating since her split from former beau, Doug Reinhardt, in April. And since that time, the couple has never shied away from engaging in public displays of affection.

It has also been a dramatic start to their romance, after Cy, a former nightclub tycoon, was also arrested for driving under the influence on the same night Paris was nabbed with the illicit drug. The pair has also fought off controversy about a hit-and-run after Cy hit a photographer outside a Hollywood restaurant.

But he has been labeled Paris’ hero after spotting an intruder at her home, peering through a window and carrying two knives. Cy immediately grabbed his gun and ordered the man to drop the knives and lay on his stomach until cops arrived. According to a source close to the couple, the mother of Cy’s daughter, Shea, used to be a cocktail waitress at one of his Las Vegas establishments.

Cy co-owns Las Vegas hotspots XS, Tryst and Drai’s in Hollywood with his twin brother Jesse.