What is “friends circle”? Why some remain friends and some become lovers? We are passionate about some people romantically but others remain in our “friends circle”. What factors influence our decision of getting romantically involved with someone while just being “friends” with some others? Why we are passionate about some people but only for a short time while develop a life-long intimate relationship with someone special? Let’s analyze the psychological underpinning of friendship, infatuation and romantic love.