You play a significant role in my life.
You have been, for quite a long time.
Your emotions, problems, well-being and things alike - they're part of my concern.
Your happiness is all I ever wish for, and although most of the time they're short lived, it still puts me at ease knowing that you're still capable of laughing and smiling without hiding anything.
I'm sorry that I have been disappointing you lately.
I'm sorry that I have been selfish with my own happiness.
I'm sorry that I have turned my back on you.
I'm sorry that I have averted my attention elsewhere.
I'm sorry that I may have made you feel replaced.
I'm sorry that I expected you to understand, the day I neglected you.
I'm sorry that I'm a terrible person, a terrible friend.
I'm sorry.