HELP! Chance he never received the friend request ?(fb)?

[Sweet and Lovely]

Hey
Thanks in Advance

So basically I sent a friend request to my crush on Facebook aka fb
I sent it in November tho and since then there hasn't been any activities he has done on fb
I found out yesterday he liked a video of one of his friends and today he changed his profile pic

My question is : is there a possible chance I sent the friend request but it was just a "bug" and he never received it?
any suggestions?
btw i don't talk to this guy often (he is shy)
I see "friend request pending" when i visit his page

Would it look bad if I cancelled it and sent him the request again
IS IT POSSIBLE HE NEVER RECEIVED THE REQUEST THO?