What's going on with him ?

Sounds like he does like you, because you asked him who he liked and he couldn't give an answer, if he was laughing, it shows that he was nervous that you asked that question, and not trying to give away anything that make suggest he likes you, he might be like this if he is a shy person, you could just casually ask him what type of girls he goes for, and what girls he doesn't go for, could flirt with him, and if he responds in a good way, can mean he does like you.