Rihanna, Chris Brown 'Mistake,' RiRi Dating Ex-Boyfriend Drake? 'Diamonds' Songstress 'Likes' Intimate Drizzy Instagram PHOTO, Amanda Bynes/Karrueche Tran Jealous? [VIDEO]

Apparently Rihanna's relationship with Chris Brown is officially OVER - for good. Rumors suggest that the "Diamonds" songstress is now dating ex-boyfriend Drake... and she considers her on-and-off again romance with Breezy a huge "mistake." RiRi recently "liked" an intimate photo posted on Instagram where she's cuddling-up against the YOLO rapper... insinuating that they are indeed a blossoming couple. Hmmm - wonder if troubled starlet Amanda Bynes and Brown's current beau Karrueche Tran are jealous at all?

As Mstars reported earlier this month:

MediaTakeOut reports that the relationship rumors surrounding RiRi and Drizzy are indeed TRUE - a "Diamonds" World Tour snitch confirms that Drake's been following the "Stay" songstress around to several off her performances.

"Rihanna and Drake have history, and they really want to make this into a real relationship - so they're keeping this quiet," the insider explains. "I think Rihanna's in love."

As several fans probably remember, Drake and Breezy got into a HUGE fight last summer over RiRi. Drizzy swore that the two embarked on a wild, not-so-secret sexual romp while Rihanna was still dating the "Fine China" crooner. Yeah, that didn't go over too well with Brown...

Hmm... maybe this is why RiRi recently twerked to A$AP Rocky's hit "F#ckin Problems" (also featuring Drake and Kendrick Lamar). She's just showing some love for her new man!

RiRi further instigated such rumors on July 10, when she "liked" one fan's post on Instagram of this sexy snapshot from the duo's "Take Care" music video:

Here's what an insider for Look magazine has to say about the rekindled romance:

“When she was dating Chris, he [asked her not to talk] to Drake,” a source told Look magazine. “She really missed him in that time – yes, they went out years before but he was also a good friend to her – so calling him was one of the first things she did when she realized she was over Chris... [Drake's been] waiting patiently on the sidelines. Just over a month ago, Drake gave Rihanna an ultimatum. He told her he needed to move on if she wasn’t going to commit. His love life was paused when Chris and Rihanna reunited, and Drake claims it caused him stress headaches, writer’s block and anxiety. He was obviously sick of it, but Rihanna wasn’t ready for him. Now Chris and Rihanna are done for good, Drake might finally get his chance... Since that first phone call, they’ve been talking again a lot and have such a connection. She even hinted in one message that she chose the wrong guy."

Another source for Urban Islandz explains,

“Drake was the one who first initiated a conversation via a text message... Ri was happy to talk to him because she was hurting after splitting with that DB Chris. She told him she was sorry for hurting him and that she chose the wrong guy... Drake told her he will always have a shoulder for her to lean on and that he is happy as long as she is okay."

Wonder if this will cause any Twitter issues with Amanda Bynes? The troubled actress has a "huge" crush on Drake... and she thinks RiRi is "ugly." And will Karrueche Tran rekindle a feud now that Rihanna seems happy again? some Stay tuned for some more never-ending drama...