Facebook No "Add Friend" option??

[NorthernCry]

Is there any reason why there is no "friend request" beside there name in the "search bar" but when I go on there profile page, I am able to "add friend" (but only when I am on there PROFILE PAGE not in my search bar)

when I type the first letter of there name, they pop up along with friend of mine on Facebook at the top of the list as if there already friend on Facebook. If I wait a minute more "mutural fiends" show up but they have the "add friend option" which is normal.

I go on to my boyfriends account and search the names and they show up as normal in the "search bar" with "add friend" option

It's just my account that it does this. One of the people I deleted was kind of a stalker and liked me a lot, so maybe this has something to do with it?