Appreciation

I've been thinking the past couple days about my past/future relationship(s).  I wanted to text or email or message someone and let me them know that I was sorry for not appreciating them enough when we were together.  With time, a relationship can become comfortable.  Sometimes too comfortable and you forget to value the things that your partner does, things that you used to cherish and be extremely grateful for, you eventually come to expect and it becomes routine.  I'm never thankful enough, not ever.  I've been working on it.  My parents taught me to say thank you for everything people do but somewhere along the way I got it in my head that if I said thank you it wasn't enough or that I was only saying it because I had to and in that way it lost it's meaning for me.  So now I want to say how much I appreciate the man you were and the man you became while we were together.  I'd also like to say how much I appreciate you accepting me for the man I was and the man I became over the years.  It's hard to move on, not because I don't think it's time but because it seems difficult and almost unreasonable for me to expect to find someone who will make me as thankful as I was/am for you.