Difficult Question :D
It's an awesome feeling , the person feel it when he/she realize that he/she cares about the person he/she loves and wants to talk to him/her and love talking with him/her , it can be between friends , family and everyone you know , we can't live without love bec. it's the source of happiness in life . there's alot of things we can describe LOVE with but i can't say more than this :D