I'm in this situation as well, a guy that I'm interested in has had a bad break up and doesn't want to be in a relationship and want to focus on his career but he's infatuated by me so doesn't know what to do. Focus on his career or be in a relationship with me. He's not a marriage or date material either but he couldn't help that he liked me. Basically he doesn't know what he wants. Tbh I asked him out a few times but he always made excuses to be with me cos he's scared of being in a relationship or he's not confident to go out with me. He's also introduced me to his family. I'd say if a guy doesn't know what he wants you should back off a bit, give him space until he knows what he's after, you'll find out from a guy when you actually moved on with another guy or you actually hint to him you've actually moved on. It's not fair on you to wait for a guy who doesn't know what he wants. He's gonna keep acting like this for God knows how long. Until he's 40? I assume you guys are very young. Meet other guys, keep your options open but keep him in your options as well so you don't lose him. If you get him great, if you don't and find someone else, he'll regret it. Don't frustrate yourself, you'll give yourself a headache trying to figure him out, the thing is guys want you to figure them out, they want you get confused, he wants you to think about him, he wants you to chase him. Well, don't for now, and he'll start to miss you IF he really really does like you. If he doesn't seem to miss you, then you know the answer, he just wants the chase or he's tooooooo shy or scared to ask you out. At the end of the day if you get him great, if you don't he'll start to regret losing you so either way you win.
Have a nice day!