I agree with ryan, I think that some chick has broken up with him.
I interpreted the lines
"Lie awake completely satisfied and let the sweat run through my hair
Well, I haven't felt this way in quite some time, when I look over your not there"
As him having a 'good time' with himself, then sadly realizes he's all alone - he's imagining being with her but she's left him.
The rest is pretty much self explanatory.
That's just my spin on it.
I agree with ryan, I think that some chick has broken up with him.
I interpreted the lines
"Lie awake completely satisfied and let the sweat run through my hair Well, I haven't felt this way in quite some time, when I look over your not there"
As him having a 'good time' with himself, then sadly realizes he's all alone - he's imagining being with her but she's left him. The rest is pretty much self explanatory. That's just my spin on it.