Rihanna Responds to Chris Brown and Nicole Scherzinger Incident? (PHOTO)

Rihanna recently posted a series of cryptic messages on social networking site Twitter following the release of suspicious photographs of Chris Brown and Nicole Scherzinger, and fans are suspecting that the Bajan singer may be furious over the alleged "kissing" incident.

Brown, who stunned fans by publicly kissing Rihanna, 24, amid rumors of a reconciliation on Sept. 6, was photographed intimately embracing Scherzinger, 34, during a night out at the Supperclub in Los Angeles on Tuesday.

"[Chris and Nicole] were dancing close for a while and being all touchy-feely and finally Chris leaned into her. She put her head on his shoulder and they started kissing! I couldn't believe Chris was being so obvious about it!" a source allegedly told X17online.com.

Scherzinger has denied that they kissed and insists that she and Brown, 23, are only friends, although many critics believe that the photos prove otherwise.

"I don't get bitter, I just get better," Rihanna tweeted on Wednesday after the photos of Brown and Scherzinger's night out went viral.

"Don't waste your time worrying about people who don't worry about you," another cryptic tweet read.

"If only I could scream as loud as I want right now," she later tweeted.

"The sooner we learn that feelings are fickle, the better off we are. -Joyce [Meyer]," Rihanna also retweeted.

Brown and Scherzinger, along with other celebrities, had teamed up to host the Black Pyramid Party event where the photos were taken. "The Voice" U.K. judge Will.i.am and singer Sean Kingston were reportedly also at the venue, according to Mail Online.

Rihanna and Brown have been faced with rumors of a reconciliation for months following their 2009 breakup after a domestic assault incident. The "Where Have You Been" singer fueled the speculation on Monday, just one day before Brown's night with Scherzinger, when she sent him a supportive tweet ahead of his court appearance relating to their domestic assault case. Some believe that the Bajan singer was left heartbroken after seeing the new photos of Brown and Scherzinger.

"@chrisbrown I'm praying for you and wishing u the best today!" Rihanna tweeted on Sept. 24, to which Brown responded "Thank u so much."

Earlier she had sent a more intimate tweet with a reference to her "baby," which followers suspect was also aimed at Brown.

"Praying for you baby, my best wishes are with you today! Remember that whatever God does in our lives, it is WELL DONE!!! #1Love," she tweeted. In August, Rihanna confirmed that both she and Brown still love each other and have maintained a close bond despite the assault incident.

"I still love him. We're very, very close friends. We built a trust again and that's it. We love each other and we probably always will," Rihanna said in an interview with renowned talk show host Oprah Winfrey.

Scherzinger, who is a celebrity judge on "X-Factor" U.K., has been dating Formula One race car driver Lewis Hamilton, 27, on-and-off for five years. Her night with Brown has now raised questions about the current status of her relationship with Lewis.

To see photos of Nicole Scherzinger's night with Chris Brown click here: http://www.x17online.com/celebrities/rihanna/rihanna_chris_brown_nicole_scherzinger_hookup_twitter_kiss_club_photos_exclusive_092612.php