headin for heartbreak

So ive been dating this guy and idk lately hes been not rlly replying to my texts. Ik hes been sore from his sports and stuff but its just making me really upset and nervous bc i finally after a year put myself out there and ik i shouldnt be feeling shitty in the beginning of a relationship. Like i feel like hes not into it but he keep continuing the flirting and stuff its just really weird. Like he falls asleep early every night and it just sucks bc i didnt wanna fall for someone and look now, im heading towards a heartbreak i never wanted in the first place.