Even though singer Shawn Mendes has denied a relationship with Fifth Harmony's Camila Cabello, both of their social media accounts seem to indicate otherwise.

Rumors of a possible relationship began on social media with a few flirtatious tweets between the two stars and now a new video has added fuel to the fire.

Both stars shared a video on Instagram of them singing a duet during what may probably be one of Cabello's guitar lessons from Mendes.

Mendes captioned the video with "Say my name x give me love @camila_cabello." At first the caption may seem like a love note to Cabello but is simply just the names of both the songs, sung by Destiny's Child and Ed Sheeran, respectively, that are featured in the video.

 Say my name x give me love @camila_cabello

A video posted by Shawn Mendes (@shawnmendes) on Aug 31, 2015 at 8:35pm PDT

Mendes recently denied a romantic relationship between him and Cabello during a carpet interview with Hollywire at the 2015 MTV Video Music Awards pre-show.

"Me and Camila are very good friends," said Mendes. "She's amazing. She's just so funny and so awesome and so enthusiastic. Like she will bring any negative situation and just make it positive, which is very cool."

Soon after making the statement, the interview was interrupted by Cabello herself who was excited to hear Mendes was talking about her. Cabello explained how the two friends are helping each other out. Mendes by giving her a few guitar lessons and Cabello teaching Mendes Spanish, a topic which began the speculation about a romance in the first place.

To further add to the speculation, the teens were spotted attending the Republic Records MTV Video Music Awards after-party together and were later photographed and caught leaving the party together on video.

Check out the Hollywire interview below.