Is this flirting?????

ok well me and this guy have been texting lately. and i like him but idk if he like me and idk if he has feelings for his ex gf. but in skool we hav a paper fight(ik it sounds corny) and me and him just kept aiming at eachother while everyone was aiming at eachother. also yesterday he brought up tht he had won and we were like cute arguing. so umm is it flirting?? and do u think he likes me?