Jennifer Aniston’s boyfriend, Jim Curtis, is opening up about navigating new fame. “To be quite honest, that was something to get used to,” Curtis, 50, said on the Tuesday, September 8, episode of “The Jamie Kern Lima Show” about making headlines with his and Aniston’s romance. “Because I’ve been pretty public for a long time but never this level or this, kind of, segment. I’ve never been in the Hollywood kind of trades, the press. No one has really cared who I’ve dated in the past. So that was an adjustment for me, but it was a real learning experience, too.” Curtis shared that he learned a “lesson” that it “doesn’t matter what people are…