Olivia Munn Details John Mulaney’s Support Amidst Her Breast Cancer Treatment [Video]

Earlier this year, Olivia Munn revealed that she’d been diagnosed with breast cancer and had been undergoing treatment. Now, the actress has opened up about her journey and offered some details about how supportive her boyfriend, comedian John Mulaney — with whom she shares a 2-year-old son, Malcolm — has been through it all.

“It would’ve felt like climbing an iceberg without him,” Munn told PEOPLE. “I don’t think he had a moment to himself, between being an incredibly hands-on father and going to and from the hospital-taking Malcolm to the park, putting him to nap, driving to Cedars-Sinai, hanging out with me, going home, putting Malcolm to bed, coming back to me. And he did it all happily.”

“When I’m with him, it’s the only time my brain doesn’t think about being sick,” she continued. “I’m just so happy with him. And it puts a lot of stuff into perspective. Because if my body changes, I’m still …