How do I know if my partner is on OnlyFans?

The straight answer: you ask them directly. Playing detective usually does way more damage to a relationship than whatever you end up finding. Technically, people try searching common usernames on the site, checking shared browser histories, or looking for billing names like 'Fenix Internet' on statements. But going down that rabbit hole means you're already operating without trust. Even if you find an account—whether they're creating content or just subscribing—snooping puts you on the defensive. Instead, bring it up casually in a neutral moment. Try something like: 'Hey, I’ve been thinking about our boundaries around adult content and platforms like OnlyFans. Where do you stand on that?' That opens the door for them to be honest without feeling ambushed. Ultimately, you need to know where your boundaries lie: is paid adult content or content creation an absolute dealbreaker for you? Talk about that boundary openly.