How do you ask forgiveness from a guy you hurt badly?

Answer 1

Well first of all, you shouldn't have hurt him in the first place. Second of all-approach him and apologize. You have to clear everything up. If he refuses to talk to you, give him space to cool off. Then, you just have to let things happen gradually, because you just don't just "kiss and make up" all of the sudden like you do in movies. If you give it time, the wound will heal.

-- another answer --

When this happens in any relationship

Start with a sincere apology.

Follow that with whatever honest explanation you might have for your actions.

After that, it is up to the other party

They may not want to know.