Can i trust my brother with my daughter?

my younger brother spends a lot of time with my daughter Zoey. sometimes even when i'm not around. with my husband working in the military and me at work much of the day, no one's home to babysit her, so he does it for free. he's been doing so for several years now, and they've grown really close. recently, he decided to confess that he's a pedophile, and has been since he was 19. i got very mad at him for keeping it a secret from me for so long. naturally, i'm worried he might try something with Zoey, assuming he hasn't already. he swore he hadn't and wouldn't, but i don't know if i can trust him anymore. he's never given me a real reason not to, and as far as i can tell, he treats Zoey like i'd expect an uncle to treat his niece. he's 25 now, and she's 13, and they're still pretty close. neither Zoey nor her father know he's a pedophile, and he's only told two people, me and his best friend Mark. i don't want to distrust him like this, but it's just so hard to imagine he could be a pedophile and NOT try something. i've been too afraid to ask him if he's attracted to her, fearing what he might say. maybe i'm just being judgmental, but i want to know for sure if i can trust him with my daughter. do you know of any way i can do that?