A Little Sentimental lyrics

(Joe Babcock)
Sitting here with you don't know why I'm blue
Just a feeling that I've had right from the start
Something bout your smile that lingers for a while
Stirs an old time mem'ry in my heart.
Don't mind me if I'm a little sentimental
Don't mind me I'm not about to cry
It's just a thought that I remember
Left over from a time in days gone by.
Don't mind me if I'm a little melancholy
Thinking of someone that I love so
Don't mind me if I'm a little sentimental
You remind me of the girl I used to know.
--- Instrumental ---
Don't mind me if I'm a little melancholy
Thinking of someone that I love so
Don't mind me if I'm a little sentimental
You remind me of the girl I used to know...

Submitted by Guest

What do you think is the meaning of A Little Sentimental by Marty Robbins?