how do i know if he doesn't like me? or if he's irritated? he's kind of introvert
Introverts have the most subtle of physical tells. They can express much with gestures or expressions, much like passive aggressive people but with a different connotation. I'm sure you've spent enough time to notice little things about him. Learn how he acts when he see things he likes and doesn't, and judge from there.
What's the absolute best vacation you can imagine?
Anywhere with my girlfriend
What kind of movies do you most enjoy?
Netflix and chill
You're stuck between a rock and a hard place, what are you going to do?
Relive the mistakes that brought you to this point.