The recent One Direction concert in Birmingham, England had many of the boy bands' fans coming and looking out for all the moves of each member, including Harry Styles, who was also spotted flirting with ex-girlfriend and "Keeping Up With The Kardashians" star Kendall Jenner, according to a source.

The concert was a blast, according to several reports, but what's more interesting for many was the afterparty at the Barclaycard Arena, where Styles and Jenner were reported getting cozy with each other backstage, as per a source from Hollywood Life.

Although the two may have broken up in 2014, the One Direction singer and the rising model are apparently getting close again, and a source claimed that the two were together the entire after party. "After the show at Barclaycard Arena (Birmingham, England), Kendall and Cara went backstage where the guys were having a party. Kendall and Harry were totally flirting and talking the entire time," the source told the publication.

"A lot of girls were wanting Harry's attention, but he was just locked on Kendall. They have on more show tonight in Birmingham and then they are off to Dublin," the source added. Meanwhile, there are still no official statements from both personalities to confirm or deny the rumors.

What is just known is that both were reunited at the concert and relationship rumors might not be true, according to Unreality TV, since Styles is apparently prepping up for more work after the band leaves England.

It is obviously difficult for the two to kick off their former relationship again since they have been busy in their individual careers. Jenner's modeling career is keeping. On the other hand, Styles' hands are full with One Direction's world tour to promote their new album, "Made in the A.M." The band will be on hiatus this coming March 2016.

Meanwhile, another former girlfriend of Styles recently came up and talked about her past relationship with the One Direction band member.

X-Factor host Carolina Flack finally spoke up about Styles in a recent interview with the Herald to promote her new book "Storm in a Cup."

"It was flattering and I found it amusing. He was a kind of cheeky man/boy with a captivating smile who got what he wanted," Flack said of Styles.

"We were both single, we got on well and we had a laugh," she added. The two dated back in 2010.