@hewnawix,
Quote:we got in a small fight, and we got over it but now he texts very differently
Correlation doesn't necessarily imply causastion. I'd ask a couple of questions:
1. What was the "small fight" about?
2. Are you sure that he considered it to be small?
3. What makes you sure that both of you got over it?
4. How long have you been together? You'd expect a bit of routine to creep in after a certain amount of time, and it may be completely unrelated to the "small fight."