Rihanna is very much single. Prior to singing her Unapologetic fan favorite “What Now” at the Barclay’s Center in Brooklyn last night, the Bajan pop star addressed her Navy about the current state of her love life:

“Anybody who thinks love is the most complicated s*** ever?” she asked. “This is for us complicated ones. What the f*** now …”

Although her recently confirmed ex-boo Chris Brown was in city, he was not in attendance for the Diamonds World Tour stop in BK. However, that doesn’t mean that Robyn was lonely. In fact, after her show, she was spotted at NYC hot spot Greenhouse in the company of her former chop-down chum, New York Knicks hooper J.R. Smith!

There are no reports of any freak-deeky shenanigans between the two during the party, but…after the club it’s the after-party, and after the party it’s the hotel lobby…

Rihanna left fans waiting hours for a concert in Boston on Monday night, a concert she already had to postpone due to illness.

Rihanna arrived far behind schedule for her May 6 show at TD Garden. Boston.com reports she took the stage at 10:30 p.m., but the doors had opened at 7:30 p.m., and she was supposed to have started at 9 p.m. Check out the video below!

After a interview gone wrong after a taping of American Idol, Access Hollywood reporter Laura Saltman used her company’s website to take a big, steaming, isht on Nicki Minaj.

the exchange went a little something like this:

“Are you looking forward to the end of American Idol? Because I know there were some Twitter comments you made today that caused quite a stir,” Laura asked.

“That question didn’t even make sense,” Nick replied. “So if you want me to insinuate what you’re talking about I’m not going to.”

Before Saltman could respond, Nicki rolled her eyes, said goodnight and walked away.

 

THEN Nicki took her frustration to Twitter and posted a few tweets! Here are some of her upset remarks:

According to Perezhilton.com American Idol producers must be REALLY desperate for a ratings spike on the show’s next season. Justin Beiber and Selena Gomezare reportedly at the top of their judges shortlist, as well as Pink andDiddy!

A source revealed:

“It’s been a lackluster season for Idol and everyone involved with the show is well aware of it so that’s why producers are frantically working on lining up big name stars for season 14. There’s more drama going on behind the scenes of the show than on the stage, and that’s why there’s a major overhaul in the works. A telling sign was that the highlight of the season was Mariah and Nicki’s explosive feud that was leaked on the web – and that was before the season even aired. Producers have been trying to recreate that buzz ever since and it hasn’t worked – the public isn’t buying it. The judges don’t have real chemistry, and there’s no real standout contestant."

A source reveals that Karrueche and Chris hung out in NYC before they reunited again at his birthday party in LA. It turns out that Karrueche popped over to NYC while Chris was in town celebrating his buddy DJ Prostyle’s birthday.

“When Chris was in NYC celebrating a friend’s birthday, Rihanna found out that Karrueche was in town,” the source explains. “She found out that they met up and saw each other and so she dumped Chris.”

Justin Bieber's fate -- and freedom -- are now in the hands of the L.A. County District Attorney, who is now deciding whether to prosecute the singer for allegedly spitting in his neighbor's face and threatening to kill him -- and we know the Sheriff has told prosecutors -- haul him before a judge!

Justin was racing his Ferrari in his Calabasas gated community last March, and the breakneck speed didn't sit well with a neighbor who confronted him.  Justin allegedly ordered the neighbor off his property and then spit in his face and said, "I'm going to f**king kill you!"

The L.A. County Sheriff's Dept. investigated the case and sent the file to the D.A. Tuesday.  Law enforcement sources tell TMZ ... Sheriff's investigators are urging prosecutors to charge the singer with battery.  We're told cops don't think Bieber should go to jail, but he needs serious counseling because of his repeated and escalating bad behavior.

Check out both songs below!