Lemme explain you in simple way, some relations are like a water in the hand, or a sand in the hand, the more tightly you hold it, the more it slips away, and the more lightly you take it, it more it stays.
Well the thing is, you guys might have noticed, if you have ever fallen in realationship with girl/guy (what you call love) after certain there comes a time, the more you become possesiive, the more you chase him/her the more he/she tries to go away or YOU feel that in some way, and the more you fear the, more you become possesive, the more you become arguementive, the more you need him/her, and the more he/her gets irritated, and tries to ignore you.
It is simple and general human behaviour. When you do excess on anyone, or show excess care, then that person may go careless, because he knows well that you wont leave him and he MAY try to take that for granted.
So in anyrelationship, always give some space and freedom. Else its difficult.
I know its already difficult to take someone you love take so easy, but think about tomorrow, it MAY get tougher when he/she tend to slips away.
What do you say?