Need help getting over her

Hello! I'm 16 and apologies for the bad grammar. this was my first relationship and first breakup, as you can probably guess by my age I'm really inexperienced in this fields so I am gonna need help/vent a little.

We were in a relationship for a little over 6 months ig idk then you know we fell apart yada yada yada we broke off in good terms and we broke up like a month ago or so but I thought I wouldve healed by now but I don't think I have sometimes when it's nightime or I'm like alone I get this feeling like I need/want to be in a relationship with her again I think it's called relapsing or something but sometimes during the day or even night I have this sort of "fuck her, she wasn't even that good to you, you are being blinded by nostalgia or loneliness" feeling.

I think this is normal and if it is I don't want to be clowned here 😭, I just need some help about it.