The goal of this research is to explore cancer survivors' and their romantic partners' interest in a couples-based physical activity intervention and whether cancer-specific exercise education influences exercise beliefs and intentions.

This study will assess multiple predictors of couples-based physical activity interest among both survivors and partners including gender, age, current exercise, relationship satisfaction and partner support for exercise. Additionally, this study will include an experimental manipulation in which half of the sample will be randomized to receive cancer-specific exercise education.

In order to be eligible, individuals must answer "Yes" to all of the following statements:

• I am a cancer survivor OR I am the romantic partner of a cancer survivor
• I am not currently undergoing chemotherapy, radiation or surgery nor do I have plans to undergo chemotherapy, radiation or a cancer-related surgery in the next 6 months
• I am in a committed, romantic relationship
• I have access to a computer or tablet with internet
• I have an email address that I am willing to share with the study team
• I am at least 18 years of age and less than 90 years of age

We are interested in hearing from cancer survivors and romantic partners from diverse backgrounds. This study is open to both active and inactive individuals. Cancer survivors can have had any type of cancer, cancer treatment, or recurrence(s). Further, we are not limiting participation based on time since diagnosis. Romantic partners do not need to be married, co-habituating, or in a relationship for a specific time-period in order to be eligible. Additionally, this study will not exclude couples in which both individuals are cancer survivors. Lastly, while we prefer both partners within a couple participate, we will not exclude individual participation.