*Early Monday Chris Brown sent an all-caps “HAPPY BIRTHDAY ROBYN!” tweet out to Rihanna (a.k.a. Robyn Fenty), and Rihanna replied with a “Thanks!”

Then all hell broke loose. The exchange immediately drew heated responses from folks both for and against the former couple’s communication with each other.

For example:

“BREAKING: Rihanna to have Chris Brown inspired pinata at her birthday party. Happy Birthday Rihanna.” — @ NewsThatsFake

“Chris Brown & Rihanna: The New Bobby & Whitney” — @ RihannaWatch

“The fact that Chris Brown & Rihanna tweeted each other shows they are moving on & not holding onto the past. Other people should move on 2!” — @KizzleBrown

“Rihanna and Chris Brown are collaborating in studio for a new song. I’m sure it will be a hit!” — @VeryRudeTweets

“I would like @chrisbrown fight somebody that can defend themselves. Me curb stomping that … would be a #wrestlemania moment” — @CMPunk

“Positivity regardless of how u feel! @CMpunk contact my assistant and I’ll have em send u an autographed pic for my biggest FAN!!!” — @chrisbrown

Also playing out on Twitter was the official release of their two remix collaborations, “Turn Up the Music” and “Birthday Cake.”

“@chrisbrown Turn up the music remix #RihannaNavy #Teambreezy enjoy!!!” the Barbados songstress tweeted out to her fans, along with a link to a remix of Brown’s hit “Turn Up the Music,” which he performed at the Grammys just last week.

Less than a minute later, the singer followed up with another shoutout to her fans after Brown returned the favor, tweeting a link to the second collaboration.

“#RihannaNavy Come and put ya name on it!!!!! RT @chrisbrown: @rihanna YIKES!!! Cake, cake, cake!”

Moments later, Rihanna excitedly tweeted “Its a download OVERLOAD!!!! Working on more links for u guys, so errbody could have some #CAKE.”

Country singer Miranda Lambert with an on-stage message to Chris Brown in Amherst, Mass (Feb 16, 2012)

Meanwhile, country star Miranda Lambert – who tweeted after the Grammy’s that Chris Brown should listen to her song, “Gunpowder and Lead” (about a woman plotting to kill her abusive husband) – took her animosity toward the 22-year-old star a step further last week.  During her concert Thursday in Amherst, Massachusetts, she held up a fan-made sign that read, “Take notes Chris Brown.”

Lambert told the cheering audience, “I just have to speak my mind, because where I come from, beating up on a woman is never OK. So that’s why my daddy taught me early on in life how to use a shotgun.”

Watch below.