Lindsay Lohan -- Not Banging DJ Julian Cavin

Fear not men who want to bone Lindsay Lohan ... SHE'S STILL SINGLE ... despite reports that she's secretly dating / banging New York DJ Julian Cavin -- this according to the DJ himself.

The Internet's been abuzz with rumors this week that LiLo found herself a new boyfriend ... after she and the 22-year-old spin master were spotted together in NYC Sunday -- allegedly holding hands and acting very much like a couple.

But DJ Julian says it just ain't true -- claiming they've only known each other for about a month -- and tells TMZ ... "Lindsay and I are just friends. We are not dating."

He explains, "She comes to a bunch of my DJ gigs. Sunday she came and was hanging in the booth."