The 'Mean Girls' star, who parted ways with the DJ this month, revealed she did not know the relationship was coming to an end.
"I had no idea what was going on. I just hadn't seen her in, like, a week. She, like, disappeared," People magazine quoted her as saying on the Ellen DeGeneres show.
The 22-year-old further denied cheating on her 31-year-old ex and was hopeful of getting back with her in the future.
She added: "I really care about Samantha and we'll see what happens. Maybe when we're fully in the right place. And I love her." (ANI)