avani: hello, avani dias with you for "hack." ten years ago, no one had even heard of dating apps. eet their partners, but it's not all weddings and tinder babies. avani: in march, we asked triple j "hack" listeners to tell us about their experiences with dating apps and sexual assault. avani: so, we're launching a major investigation today to find out what's going on, and we want your help to share your stories. if you've ever had an experience on a dating app that made you feel unsafe, i'd love to know what happened. get in touch on the "hack" website. avani: more than 400 people responded, 175 of them told us they'd experienced a sex offense by someone they'd met on tinder. brooke was one of those people who thought she'd found her match on tinder. ♪♪♪ brooke: when i first got on tinder, i guess i was trying to find love or to try and find someone to be in a relationship with. i first matched with him in 2017, i was in my last year of uni. i guess my first impression was that he seemed like a really chill, down-to-earth kind of guy. he was living with his grandma, he'd moved sort