Justin Bieber and Selena Gomez
Bieber and Gomez dated from 2010 until 2014 before they went their separate waysReuters/Danny Moloshok

Justin Bieber has 'liked' a photo of ex-flame Selena Gomez, just days after she did the same with a TBT kissing photo of her that was shared by the Sorry singer on Instagram. The photo which was shared by Gomez on Instagram sees her in a bikini playing the piano.

There are rumours that Bieber, 22, and Selena, 23, have rekindled their romance. Earlier this week, Bieber shared a throwback kissing photo GomezGomez, which was 'liked' by the Same Old Love singer – she even wrote: "perfect" underneath it. Selena later attended Bieber's concert in Los Angeles on 23 March.

According to HollywoodLife, Selena attended Bieber's concert to surprise him. They met backstage after the concert and Bieber even drove her home, the gossip site reported.

"Touring is exhausting and he feels lonely while on it, and that is why and when he started feeling more feelings for her," a source told HollywoodLife. "He wants to be with her now that he feels more lonely." The gossip site also reported that the two have been secretly meeting up for drinks and lunches at the Montage Beverly Hills hotel.

Meanwhile, Bieber has also been linked to Kourtney Kardashian, who also attended Bieber's concert with friends Malika Haqq and Big Sean. However, with Bieber spending most of his time with Gomez during the concert, Kourtney's sister Kim apparently warned Bieber not to play with her sister's emotions.

"Kim pulled Justin aside last night and berated him [at an after-party]. In a very calm voice and her eyes looking through his soul, Kim told Justin to stop playing with Kourtney's emotions. She told him that Kourtney's been through enough with Scott and the last thing she needs is to be tangled up in yet another love triangle," a source said.

Bieber and Gomez dated from 2010 until 2014 before they went their separate ways.

tb to a sweet, small house in TX

A photo posted by Selena Gomez (@selenagomez) on