The 25-year-old actor said he always aspires to have a great friendship with the person in his life, reported Us magazine.
"I think that's the kind of relationship I always aspire to have with someone I'm in a relationship with. You want that person to be your best friend. In the case of Erin, we definitely are," he said.
"I don't think you can ever control how anything starts. It's not like I seek out that way of meeting people or think I have to be their friend first but I think it's often a very natural thing to progress from into a relationship. The whole modern idea of 'friend zone' and all that stuff-that's a word I don't like very much."