You can use that app in different ways:
1) you dated a guy on tinder, he became all pushy on your first date, touched you inappropriately even though you said no. Or some guy became violent during your relationship and you even found out he has a history of that.
2) you dated a nice guy but he dumped you for whatever reason, and now you want to get back at him so you make up stuff like mentioned above, and post it there.