Is he only thinking aout himself and expecting me to follow him around the world!?

The first thing you need to do is forget about marrying this guy. Having said that, tell him how you feel and the reason why you do not see a future together is because he did not respect your opinion on such crucial decision. If he left you out of this decision, he will leave you out on all others. According to him there is only an "I", not an "us". You really don't want to pursue a relationship with such thoughtless and selfish individual.