Entourage Season 8

Entourage Season 8

For seven seasons, Entouragefans have followed the triumphs and trials in the life of Vincent Chase as the movie star character and his pals conquered Hollywood and lived the good life in Los Angeles.

In doing so, fiction has altered real life of Adrian Grenier, who plays Vince. "I was a brooding pretentious artist before I met Vince, and I now I'm somewhere in between having mildly good taste and being able to just let down your guard and have fun," the actor, 35, told PEOPLE of how his character has changed him.

It's all coming to an end, though, as Entourage begins its final season on Sunday (10:30 p.m. ET). Before the curtain draws to a close on the HBO hit, Grenier gives some insight into what to expect in the final eight episodes, as well as the future of the franchise.

Vince Is Clean: In season 7, Vince found himself entangled with a porn star girlfriend (Sasha Grey), and he developed a cocaine habit. Though better now, "he's got to prove that he's over his little snafu with drugs and porn stars," Grenier said while hosting a party at Las Vegass Chateau on Friday. "I don't think people realize that Vince isn't out of control. On paper it may seem that way, but I think he was just having a bad week or a bad couple episodes."

Have Tissues Nearby: Be prepared for an emotional ending – not just because the show is coming to an end. "It's a tear jerker," Grenier said of the series finale. "We all end in a very good place but were all completely transformed."

Eric Is Single? Since we last saw Eric (Kevin Connolly) and his fiancée Sloan (Emmanuelle Chriqui), their relationship has apparently soured drastically. Trailers for the season indicate Sloan mails her engagement ring back to Eric, which may be accurate. "They're not on good terms," Grenier said. "They're not even speaking."

Entourage: The Movie:After the final episode airs, fans will likely get one more taste of Vince and the boys – on the big screen. Though nothing is concrete, all signs point to a movie being made. "I think the movie would be a great reprise," Grenier said. "I'd bet my money on a movie ... If we do it, it's got to be big. And it will be. What's great about the show is it lends itself to be very large in scope and cinematic."