relationship advice?

hey, i’m 14 and my boyfriend just broke up w me and i tried to fix things bc i rlly don’t know what i did wrong and he told me he didn’t know why he broke up w me he just said “i just wanna be single rn” but he told me i still wanna talk to you 24/7 &be bestfriends and i wanna get back w you in the future. but now idk what to do bc he’s been talking to this girl and walking w her in the hallway so what should i do? wait or move on? i’m just scared if i move on or atleast try to he’s going to come back or i won’t ever find anyone else. does anyone have any advice to help me?!?