Jack Nicholson rarely ventures out of his home these days, but he recently visited an exhibit of photographs of the ‘Rolling Stones’ at LA’s Taschen Gallery.

While there, he kept a low profile. “He didn’t want to draw much attention,” artist Katrien Van der Schueren, an eyewitness, tells ‘Closer.’ “He wanted to be left alone.”

But don’t mistake Jack for Greta Garbo: He ultimately doesn’t want to be alone. “I would love that one last romance,” he says. “But I’m not very realistic about it happening. What I can’t deny is my yearning.”

jack nicholson and anjelica huston

Jack with his longtime love Anjelica Huston in January 1976.

Or his fear. Says a source closer to Jack, “He’s afraid of dying alone in that house,” a Mulholland Drive mansion that his children have been hoping he’ll sell. “They’ve been encouraging him to downsize and move into a more manageable place in Beverly Hills,” adds the source. “But he loves his old place in the Hollywood Hills.”

Jack knows he may be fighting a losing battle with his solitary fate. “I’m definitely still wild at heart, but I’ve struck biogravity,” he says. “I can’t hit on women in public anymore. I didn’t decide this; it just doesn’t feel right at my age.”

Related Story: Anjelica Huston Opens Up About Her Relationship with Jack Nicholson

It’s the end of an epic era of womanizing for the famously hard-partying lothario. “If you dated Jack, you knew it would be an exciting experience filled with passion and fun,” says a friend. “But you also knew it would be short-lived.”

Well, not always, Jack was married once, to Sandra Knight. “We had a very beautiful, sweet marriage,” Sandra exclusively tells ‘Closer’ of their 1962 to ’68 bond.

To read the full story on Jack, pick up the new issue of ‘Closer Weekly,’ on newsstands now!