Singer Rihanna performs at Staples Center on April 8, 2013 in Los Angeles, California.

Singer Rihanna performs at Staples Center on April 8, 2013 in Los Angeles, California.

*Rihanna, rumored to be broken up with Chris Brown, appears to have hauled her personal issues onto the stage on Monday at LA’s Staples Center.

“How many of you are in love? How many of you hate love? How many of you don’t f––ing understand it? I’m in that group,” Rihanna told the crowd, before singing “What Now,” from her most recent album.

The lyrics to that song begin: “I’ve been ignoring this big lump in my throat/I shouldn’t be crying, tears were for the weaker days/I’m stronger, now what, so I say/But something’s missing.”

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Meanwhile, a source tells People.com that Chris Brown quietly entered the arena and watched Rihanna’s performance from close to the stage. [Scroll down to watch.]

Other than the “What Now” monologue, Rihanna was all smiles during the show, according to concertgoers, even encouraging the crowd to get a little rowdy.

“Los Angeles, what the f––k?,” she said at one point. “I live here now, so I know y’all can get ratchet.”