Someone is sending friend request throughout my accounts?

Yesterday, I was playing on my smurf, then out of nowhere I got friend requested by someone named "handles69", I accepted the request and he was already offline by then, I checked his profile and it was a level 10 with no match history. Later today, I logged in to my main account and I got friend requested by the same exact account "handles69". wtf? Did this happened to anybody else? Can someone find an explanation for this? If it was a bot account, I would of expected some kind of scam message but he did not message me at all and was offline the entire time.