Have someone else do it for you.
If u find a change in someone's behaviour
If someone likes you and he or she is shy, first find out if that person really likes you. If that person likes you then try to ask that person out. I'm sure it will be fine.
find someone else to like
Beat them to it!
Send a friend to ask him
if he flirts with u or somethinq
Let the person decide who he or she likes. If you find out that they like your friend, just find another person.
Punt. Someone is a bit perverted here. Find new friends.
Someone may have a foot fetish if they find feet very appealing during intimate moments. It is a stronger thing than just admiring someone's shoes generally and can be quite specialized in terms of likes and dislikes.
find someone who likes dogs and cares 4 them
find someone who likes to win, and is good with words