Question

If you fear you have been abusive to a friend, what can you do?

Answer 1

Apologize and make them feel better as a friend.

Answer 2

You can approach your friend and ask them how they feel about your relationship. You must discuss the issues you have been having and see how they feel. Ask them if they feel like they are being abused. Try to figure out what hurt them and how you can avoid such things in the future. :)