Is it worse to delete or block someone on Facebook?

[Bob]

Between these things, which is the worst thing someone can do to reject you on Facebook with not wanting to talk to you:

1. Delete you?

2. Block you?

or

3. Deny your friend request on Facebook by not accepting that person.

If you delete someone, it isn't too big of a deal but still may get offended. When you are blocked, you are really not liked by that person! and when someone denies your friend request, it's a bad thing but shouldn't be too personal but I think the worst is when someone blocks me as a more serious punishment!