Ethan Zohn & Jenna Morasca Dye Their Hair Pink – for a Good Cause

By Liz Raftery

Friday February 03, 2012 09:40 AM EST

Ethan Zohn & Jenna Morasca

Courtesy Ethan Zohn

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As former Survivor winner Ethan Zohn prepares for stem-cell treatment in the coming weeks, the support he's getting from girlfriend Jenna Morasca is clear just by looking at the couple.

Zohn, 38, and Morasca, 30, debuted matching pink hairstyles this week to stand in solidarity as Zohn tries to beat cancer. Zohn also cut his hair into a Mohawk.

Last September, after months of being in remission from Hodgkin's lymphoma, Zohn found out that the cancer had returned. In January, he announced that he was "responding very well" to the latest round of treatments.

Zohn, who completed the New York City marathon last November, is scheduled to participate in the Cycle for Survival and the Kaiser Permanente Half-Marathon in San Francisco this weekend. Next weekend, Morasca will join him for New York City's Cycle for Survival.