I'm Confused...

Actually I'm in love with someone, 
I love him, really, really love him, 
But now he's changed, he did not like before, 
Of this there is a reason, and it seems I know it! 
Once he's always concern me, in often send SMS to me first .
But now not even seem to me he does not care anymore. 
Indeed, we frequently SMS, SMS me who is always first. 
But the answer is very short, I was wondering what his style is cool?  
Or he did not like about me? I'm also confused! 
Come back as it used to, I want you to first! 
If you know how deep this feeling ,
I just want to say "I Love You" ... :'(