Rihanna 'Creeping' With Ciara's Baby Daddy Future Behind Drake's Back? Smoke Weed & Party Amid Collaboration, Cheating Rumors Explode [Again]

Ciara just gave birth to a beautiful baby boy on May 19 with longtime boyfriend Future. But is the "Loveeeeeee Song" rapper cheating on CiCi with "Pour It Up" songstress, Rihanna!?

UPDATE: Rihanna 'Denies' Future, Reignites Beef With Baby Mama Ciara? Drake's Ex Tweets 'I Turned Your Man Down Say Thank You B*tch' Amid Cheating Buzz 

Rihanna & Future Cheating Scandal: Ciara Tweets #PrayingIsPowerful Amid Steamy NYC Hook-Up Rumors, Baby Daddy Relationship Struggling?

RiRi remains in an on-and-off again relationship with Drizzy Drake. But that doesn't mean she's stopped playing the field... and the Barbadian beauty has a VERY flirtatious personality.

But do fans really think she'd "creep" with a guy who just had a baby with a fellow songstress?

RELATED: Rihanna 'Nude' Twerking VIDEO: Drake 'Wowed & Unimpressed' With Nipple-Flashing CFDA Awards Dress, Ex-Boyfriend Chris Brown Jealous?

Well, according to a MediaTakeOut.com snitch," RiRi and Future were caught getting a little "hot-and-heavy" while recently recording in the studio together. This alleged eyewitness works at the popular, star-studded studio located in Westlake, Los Angeles. Apparently, the duo's working on a slew of new collaborations for Rihanna's upcoming album. They've recorded together in the past:

Anyway, this supposed insider explains, "There was a lot of tension in the air, like, [Future] and [Rihanna] wanted everyone to leave. And they kept looking at [each other] and laughing - there was definitely something going on between them."

Hmm - perhaps just close friends, like brother-sisterish?

But the source continues, "They were smoking a lot of weed, and I think Rihanna was drunk - and she was all over Future. There were other people around, so Future looked a little nervous and [didn't let things get ] too far. But they left together and Rihanna looked like she was ready to DROP THEM PANTIES."

Woah.

MTO also reports that just a few days ago, RiRi and Future were spotted partying at a popular NYC nightclub together.

If the cheating rumors are indeed true, poor Ciara!

Hopefully, the two are just spending a lot of time together strictly for business purposes.