Selena Gomez and her mother unfollow each other on Instagram over Justin Bieber's reunion (Details, pics)

Selena Gomez and her mother, Mandy Teefey, no longer follow each other on Instagram.It had been noted by fans on Tuesday that the 25-year-old and her mother, whose Instagram account is kicked2thecurbproductions, have unfollowed each other on the social media platform.

This recent development all comes after TMZ reported that Mandy was taken to a hospital last week after getting in a 'heated' conversation with Selena about her reuniting with on-off ex Justin Bieber.

TMZ reported Mandy had a 'heated conversation' with Selena over Justin, which led to a voluntary 'welfare' check-up. According to TMZ, Selena's family will 'never forgive him or accept [Justin]' for their complicated split in 2014.A source told the website that Mandy was taken to a welfare centre in Los Angeles for a health check 'at a family member's request'.

TMZ has previously reported that Justin is a 'huge trigger' for Selena's family and have reportedly said they intend to stay away from him.

The discussion reportedly became heated when Selena's mother learned how 'serious' the reunion was.

A source told People the reason Mandy voluntarily checked into the hospital was not just because of Justin.

'It’s been a stressful time for Mandy and she made the decision herself to go to the hospital and make sure everything was okay...This wasn’t just about Justin,' the source said.

A source for Justin told the website he's aware Selena's family isn't happy with him, but he's determined to prove himself to them. This comes just three days after Mandy took to Instagram in memory of her other daughter, Scarlett, who she lost on December 17, 2011 due to a miscarriage.

'He is sad that her mom is not doing well,' the source added.

The 41-year-old 13 Reasons Why executive producer, wrote on her Instagram account on Saturday: 'Dec 17 will never be the same, but we decide to celebrate her by writing her letters on red balloons and releasing them. Now the 17th is intertwined with the wrap of S2,' referring to season two of 13 Reasons Why.