Hi John,

I’ll add a bit to Kat’s advice.

When you think you did a mistake, you can always correct it, by spending some effort. If you made your girlfriend suffer, what would be a better solution than actually making her happier than what you would normally do? Erase the pain with good feelings. Kat’s idea about the letter is good, that will show to your girlfriend that you are very sorry and that she can trust that you will not do that again. Maybe, if you and your girlfriend think that it is not enough, you may also ask her how you can make up for what you did. Spend some effort on an errand for her, help her with a part of her job, let her relief and gratefulness be the remedy to her sorrow and let the discomfort you’ll feel be the proof to both her and you that you will not do that again.

If you think you committed a sin, repent and propose to yourself to never do that again and spend some effort to do something good, to show you actually repented.

One more thing. If she tells you that things are ok, that she forgave you and she trusts you again, please believe her. Don’t blame yourself, she accepted you the way you are, with that mistake and all other defects. Just be ready to show her you are worthy of her trust, by not falling in the same mistake again. “Erring is humane, persevering is malefic”.