Should i tell him? Answers asap lol

Okay so I was just at a gas station a guy says I'm beautiful etc and ask for my Facebook I said I have a bf and he said ok we can just be face book friends I said bet but usually ulterior motives with guy friends . He said nah not into that , so I gave him my Facebook. I haven't accept his request or messenger request cuz I feel like something is up plus I wouldn't want my Bf to do that even tho he does add ppl on Instagram he encounters in public lol should I let him know ? I'm just gonna delete the request and stuff cuz why feed into it? What u think? Yeah I feel that was stupid I gave the guy my fb lol