The new couple was in attendance at the 2014 Young Hollywood Awards that night, though they were there separately.
Ian and his Vampire Diaries co-stars Nina Dobrev and Paul Wesley picked up the award for Best Threesome while Nikki supported her former Twilight co-star Kellan Lutz, the winner of the Super Superhero award.
Earlier in the weekend, Nikki and Ian were reportedly spotted in a passionate makeout session at a Comic-Con party!
FYI: Nikki is wearing a Misha Collection two piece outfit with Jimmy Choo shoes and bag.
For more pictures of the dinner date, visit X17online.com!