Constantly in your mind?

Who or what is constantly in your mind? Or at least the first to appear in your mind when something go wrong? A guy? somebody very dear to you? best friend? your love ones?. Well I guess whoever it is, he or she must be the one important to you or even close to your heart. Everyone can be with someone all the time or even 24/7 but if the person's mind is alway more eager to receive another's MSG or call, or seem happier to receive another's MSG or call then what use is there to be together? In this period of time who is it that you think about the most? Or can it be A think of B, But B think of C or the other way around.

This entry is mostly question Which I don't even have an answer for. The only answer I had is you are constantly in my mind. Really trying to let go :)