advice please😭

Arlette
Ok so the guy i like kissed me and it was my first kiss so i pulled away (it was a reflex) and he asked me if something was wrong and i just ran away and since then i have been ignoring him because i feel ashamed for what i did and he texted me "did i do something wrong? If so please let me make it up you".
What do i reply?!?! Please help