The new issue of the "Star" has a rundown of Hollywood's Best and Worst Lovers.  Yeah, it's based on hearsay from anonymous sources . . . but you still want to hear what they have to say, right?  Here's a sample . . .

The Best:

--JOHN MAYER is "sensational" in the sack.

--RYAN GOSLING has, quote, "laser focus" while he's doing the deed.

--BEYONCÉ ties up JAY-Z and, quote, "gets absolutely wild." 

--JASON SEGEL is "amazing" during sex, then gets, quote, "giddily goofy" afterwards.

--BRADLEY COOPER talks nonstop in French.

--BEN AFFLECK gives massages, puts flowers around the bed and puts a woman's needs before his own.

--BRAD PITT and ANGELINA JOLIE get freaky behind the waterfall in their pool.

--JENNIFER LOPEZ is a SCREAMER.  In fact, a source says, quote, "Once, in a hotel, a maid charged into her room, thinking she was being murdered."

--As for DEMI MOORE, a source says, quote, "Her relationships don't end for lack of bedroom excitement."

The Worst:

--TAYLOR SWIFT isn't too exciting.  A source says, quote, "All she wants to do is kiss for hours, which is probably why none of the guys she dates stick around."

--JENNIFER ANISTON "just lays there."

(--Yes, this is an incomplete list.  You have to buy the magazine for the whole thing.)