Neil Patrick Harris suited up to blend in with a floral camouflage background in a new shoot for Glamour magazine. The former "How I Met Your Mother" star spoke about everything from family, to work, to becoming the best version of him.

"Honeymoon phases end. They just do. We're animals, and animals aren't inclined to copulate with just each other for the rest of their lives," the actor said of his relationship with husband David Burtka. "So here's a challenge: How do you keep redefining your relationship? I think you have to find new elements that turn you on, and not only sexually."

The two raise twins Harper and Gideon together, who turn four on Thursday.

"Having kids was one of those great moments for me," Harris raved. "Watching David become another level of person, mastering this other domain, made me look at him with a whole other set of appreciative eyes. That sort of made me re-fall in love with him."

"That's another important thing to realize," the Broadway star continued. "Everyone falls out of love with everything. You fall out of love with your house. You fall out of love with your job. You just have to figure out ways to keep [the love] alive."

Harris grew more candid when discussing wearing women's high heels for work.

"Walking around in heels is a very challenging thing for a guy to do. But once you've done it six or seven times, it's weirdly empowering. It was fun!" he explained.

The blonde heartthrob recently revealed he was offered the job as David Letterman's "Late Show" replacement, a gig he turned down.

"They called me in and sat me down and asked if that would be something I'd be interested in doing," he told Howard Stern on Wednesday.

"I felt like I knew what my skill set was and what I wanted to do after the show, with them. It surprised me [Moonves] pitched me that idea," Harris explained. "I sat for a time with it while I was talking to him, and I told him what concerned me about the longevity of that kind of gig. I think I would get bored of the repetition fast. The structure is so set-I don't have any interest in doing monologue, commercial, sketch, guest, guest, musical act, good night."

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