does he maybe like me?

So there's this guy...he saw me draw and shaked his head and he put out his hand and he expected me to shake his hand and then he looked at me and with a bit of a smile and then he told his friend right next to me that if he had a girl he would never leave her and would love her forever but sometimes he just ignores me and like I don't even exist so...I really need to know if he likes me or...???