What is going on here? Please help me!!?

I have been dating a man for 6 months and it has been wonderful, to say the least. He treats me well, he's sweet, affectionate, complimentary and never lets me pay for dates. We got closer in the last 3 months and have seen eachother everyweek and talk almost everyday. He makes me laugh and smile like no other. He even said we were going to on a cruise in april. He works a lot and I understand that, but sometimes I feel he always sees me at his own convenience. I expressed this to him the other night and it upset him, but I apologized and he apologized because he didn't know I felt that way. Well last night, I was going to come over after he went out for dinner and drinks with his best friend's parents, but he failed to call me when he got home, too drunk I presumed. I was upset, and turned off my phone, but he called and sent messages anyway. This morning, he surprises me with the fact that he might transfer to work in Texas, meaning he might move there (cont below)