Opinons

So i need yalls opinion on something i have been talking to this dude off and on we wasn’t really anything just talking and i met him at a party we finally had sex but i kinda caught feelings for him and we haven’t been texting. his personality has always been nonchalant anyway but should i text him or should i wait for him to text me i don’t wanna seem annoying but i just miss him forreal.. we watch eachothers stories on snap and Instagram so I’m guessing he still somewhat cares.. it’s been 4 weeks