Girl the only fuck up you did was apologizing for the kiss. He asked first for a kiss which means he gave consent already and you gave it back when you took the first step. Running away might be a lil weird and awkward but NONE of what you did needs an apology and the way you’re making a big deal of it. If anything, he should’ve thought it’s cute. Be confident and own up to yourself, and never apologize for something that’s not wrong because all it’s gonna do is make you look weak and most importantly he and other people will take advantage of it and gaslight you because you’re too nice. Now go get yours girlie good luck