How long?

I've been with my current boyfriend for a little over 3 years now and the comfort zone was always there! That's one of the reasons why I know I love him.

for me i am never really to comfortable exept in front of Zac. and that took about 2 or 3 years. so, i dont know.

a couple of days....he's so loveable....
*~*Soldier Lover*~*

It depends on the people and the chemistry.

No way to tell for sure, but is there a reason why you ask specifically? Are you in a relationship that has gotten "comftorable," or even stagnant?