Jennifer Lopez & BF — Clubbing It in Hollywood

She”s not officially divorced, but Jennifer Lopez is living the single life — hitting up a raging Hollywood nightclub last night with her new boy toy Casper Smart … has learned.

The couple stopped by Boulevard 3 — and sources tell us, J.Lo and Smart partied all night in a private area of the club … dancing with each other and being very affectionate.

We ran into Smart on his way out — but he was tight-lipped.