Like...

OK so this is the notification i got on facebook about Lee Miller liking my photo...

Lee is a friend of mine who happens to work at my school and because of him working at my school, i'm not allowed to add him on my Facebook...

That is why i'm confused as to how he could have liked my photo o.O

I checked my privacy settings and they're set to friends only...but i'm not freinds with him...i'm awfully confused