John Legend opened up to Cosmopolitan about fertility struggles with his supermodel wife Chrissy Teigen at the beginning of trying to get pregnant.

“Having a baby is a big challenge for a couple,” he said. “Going through that together strengthens your bond because if you make it through [having a child], you know you can make it through anything.”

He continued: “I think it’s especially difficult when you can’t conceive naturally. You want to feel like everything’s working properly and want everything to be perfect, but sometimes it’s not. I wouldn’t say we can’t conceive naturally, but I would say that it’s enough of a challenge where it felt like we needed help.”

They’re now hoping to have more kids through IVF: “We’re lucky that we’re living in an age where we can conceive in other ways,” he noted. “[IVF] brought us Luna and hopefully it will bring us a few more awesome kids too.”

On her drinking less: “When she was thinking about how she wanted to drink less, we talked about it,” he recalled. “I just want to support her. I want her to be happy and to live the fullest, most awesome life she can, and I want us to do it together. Whenever she sets her mind to anything, I always tell her, ‘I want to support you and help you do it.'”