Yeah. Weird. Be wary of guys like this. They will be glad to scandalize you amongst their friends, and yours, if they suddenly decide it would be "fun" to embarrass and humiliate you in public. Or he might just threaten to expose some secret of yours if you don't do something for him, like steal, or have sex, or whatnot. I met a guy once who called this :Now I've Got You, You SOB". I would suggest you turn the tables on him and ask him to share his secrets with you. And watch his body language to see if he is lying. (Do some research on the internet on how to tell if a person is lying.) He may fabricate all sorts of harmless quirks and then look smug and ask you to share yours. You could test him with some false piece of information about yourself, to see if that same info gets repeated somewhere, like on social media, or some teasing comment from one of his, or your, friends.