Justin Bieber went on a hike with Kendall Jenner after spending an entire weekend together enticing people to believe that they might be an item, according to Perez Hilton.

The pop star has already been linked with his "friend" model Hailey Baldwin after being spotted with her on several occasions. On Saturday, however, Bieber and Jenner  were spotted partying together at Diddy's son Justin Dior Combs 21st birthday bash. Jenner reportedly wore a jeans outfit for the '90s themed party.

Reports say Jenner slept over the Bieber's place in El Lay after the birthday celebration then was spotted hanging out at his house Sunday morning in the same clothes as the night before. They reportedly ended their weekend hiking in Runyon Canyon, but there's no telling exactly who Bieber is dating at this point. If it is Jenner, this might be a little shady being that she went on a trip to Dubai with Selena Gomez, Bieber's ex-girlfriend, recently.

Meanwhile, father Bruce Jenner is reportedly not so thrilled with his daughter being linked to Bieber. HollywoodLife.com reports he told her not to get too caught up with Bieber because the "Baby" singer is a player.

Still, Gomez and Bieber were spotted having dinner together at Mastro's in Beverly Hills not too long ago, HollywoodLife.com reported. Reports say Gomez looked a little upset, and Bieber is trying to win her back after the "The Heart Wants What it Wants" singer allegedly chose to be with Zedd over the heartthrob pop star.

"Selena basically told him that he was going to end up 'washed up' before his 21st birthday if he didn't make some drastic changes," a source told HollywoodLife.com. "She told him how much she missed the old Justin. Justin knows he messed up with Selena. All he wants to do now is prove her wrong and show Selena and everyone else that he can be a man of honor and integrity."