Always the one txting him first?

okay so i like this guy and he knows i like him and im pretty sure he likes me too he hasnt directly said it like me but we FLIRT aton and hes always saying we should hang out if ya wanna and we just joke aruond and have fun and stuff wen we txt and yeahh but it ALWAYS seems like im txting him first and stuff and we'll talk for like the whole day and late into the night but then he'll fall asleep and not reply and then the next day he used to reply to the txt he fell asleep to but now he dosent and i feel like im always txting him first and he answers back pretty fast but idk y he wont txt me first! i mean hes not shy or anything so idk what.. and he cant always be busy ya kno too oh and hes a yr older then me too so idk..