Do you think he likes me? I'm not sure...?

If a guy hugs you willingly, he thinks you are cute. A guy will not initiate a hug with a girl he doesn't think is attractive. The question at that point is not if HE likes you, but if YOU like him. Now, be careful because from what you have said, being a 23 year old guy, I can guess that you ARE cute. Make sure that when u get in a relationship with this guy, that he eventually likes you for you and not just your looks. If he pressures you in the future, stand your ground and if he gets mad, move on. The men you meet will be better the older you get, some men anyway. Don't be easily persuaded by charm until you can gauge maturity.