The Don Jon star, 33, is notorious for keeping his personal life extremely private, revealing only for the first time back in September 2013 that he had someone special in his life.
"I think I'm a pretty good person and a good boyfriend. Yeah, I just wouldn't want to be with someone who was disrespectful to me," he said to Howard Stern, without identifying his love. "[She's] not in show business."
The Dark Knight Rises actor also opened up about marriage, and whether or not he could stay in a monogamous relationship.
"I think that I could partner up with somebody — I don't know who that somebody is — I could partner up with a woman and commit to we're going to raise a family and that's a project we're going to commit to for 20-something years," he said. "I like to not be too committed to any one future that's really far away, necessarily, unless there's a reason, which is why I'm saying if you're gonna raise a family...I can make that commitment."
This is the first marriage for Gordon-Levitt. McCauley is the founder and CEO of Fellow Robots, a NASA-based robotics company.