Hollywood's Newest Couples

When it comes to dating in Hollywood, it can be more than a little difficult to keep up! Check out the latest celeb couples to hit our radar.

First up is Dancing with the Stars pro Derek Hough and Vampire Diaries star Nina Dobrev, who stepped out together publicly for the first time on October 5 in Los Angeles, after Us Weekly broke the news that the two were dating. The two met through Derek's sister Julianne Hough, one of Nina's well-known celeb besties. 

Twihards had to finally acknowledge the end of the Robsten era when People reported on September 26 that Pattinson had moved on from long-time love Kristen Stewart to Sean Penn and Robin Wright's model daughter, 22-year-old Dylan Penn. "They've been dating a month or two," a Pattinson source told People. "He's crazy about her." 

Ariana Grande and The Wanted's Nathan Sykes confirmed their romance via Twitter on September 24. "So, I guess it's obvious now …  thanks to everyone who is being so lovely. I'm so happy <3 #butweareterrified #pleasedontkillme #orariana," Sykes tweeted. Grande later retweeted her new beau, adding, "we hesitated saying anything as people can be a bit insensitive but thank u. we value all of your happiness, thank you for valuing ours." 

After rumors swirled about a brewing romance between Amanda Seyfried and Justin Long, the two confirmed their couple status on September 9, holding hands at the Moet & Chandon Suite at USTA Billie Jean King National Tennis Center on September 9, 2013 in New York City.

Former Glee star Dianna Agron and new boyfriend restaurateur Nick Mathers definitely weren't shy about packing on the PDA at the Fourth-Annual Veuve Clicquot Polo Classic, Los Angeles on October 5. "It's pretty new, but it's serious," a source tells Us Weekly. "He's a really super sweet, lovely guy."