One Direction singer Harry Styles is said to be getting more involved in his relationship with Austrian Victoria's Secret model Nadine Leopold. Styles, who is twenty-years-old, was first seen spending time with Leopold back in November.

The couple met through Leopold's agent, Jeff Azoff, and while Styles and Leopold are not officially boyfriend and girlfriend, they seem to be spending more and more time with each other lately.

Another reason for people to suspect that Styles and Leopold are an exclusive couple is that Styles went all out for the model's twenty-first birthday on January 7^h. The two were seen dining together for an intimate dinner at Craig's in West Hollywood on the 6^th, and they were seen again in Malibu at the Cafe Habana to party it up. On a side note, Styles also bought pink balloons for the model.

However, some sources are dismissing claims that Styles and Leopold have made it official, saying Styles will publicly announce his "taken" status by bringing a girl along with him on the red carpet.

Styles has made headlines in the past in terms of his dating life, which seems to get as much attention as his musical career in the five-member boy band popular among teenage girls. Styles has been associated with Kendall Jenner, Cara Delevingne, and Taylor Swift. Swift, known for her failed relationships, recently released her album, '1989', in which she sings of her rocky relations with Styles.

Those paying attention will notice that Styles seems to be more lovey-dovey with Leopold than with his previous female friends. If displaying some PDA is not reason enough to suspect a relationship, the couple's recent activities together sure do.