So, I've been dating this guy for a year and a half. We have a great relationship and I wouldn't change him or us for anything really. But, somehting recently kinda worried me.
I was looking around on his MySpace and noticed that the girl that's on his number two spot had put a new picture. I thought it was interesting, so I clicked on it to look and noticed he'd put a comment on it saying, and I quote, "I miss that smile. <3

"
Now on further back story between these two. Back when he lived in his old hometown, about two, three years ago, they had a thing for each other, but since he was going out with another girl at the time, they never did anything about it. She moved, then he moved, and nothing happened.
So, anyways, I don't know if I should be worried about this or not. He hasn't shown any lack of interest in me, and always calls me randomly just to say I love you, and is an overall really decent guy. What do you guys think I should do? I just really care about him, and that comment has just been bugging me.