how to forgive boyfriend after a big fight?

we had a really big fight a few hours ago because im on holiday and since i've been gone hes been really moody and so i asked him whats up and it just exploded into "you're doing this" "but you're doing that and it pisses me off" and so i just stopped texting him for a while and now we are having a conversation like mature people and hes apologized a bunch of times but i cant find it in me to say "its okay, i forgive you" any advice?