3 month relationship but high school

so i’ve been dating this boy for 3 months and everything was going good but he said i changed . we did a lot of things together and idk what happened. we started to have small little arguments but we would always say no matter what we would still love each other in the end even if we say we don’t . we broke up becuase he was having other problems ig idk we broke up for a reason we both don’t know and we causally text not much but i do really like him but idk if he still likes me . if i should try again . but what if he’s lost feelings and likes somebody else . i’m so nervous about it idk .