I am glad that you are still going to dinner and a movie, sad about his hangout with friends afterwards. But maybe we could try to Not Assume here? Maybe he feels obligated to hang out with his friends, or maybe he is afraid of your date turning into a sleepover so he feels the need to 'book himself' at another location? because you are so HOT AND IRRESISTABLE???!!!
Focus on the positives! Focus on the positives! Focus on the positives!