How do you apologize after cheating to your partner?

Before you apologize you have to sit down and think about the reasons of why you cheated. You can't really apologize until you know why you did what you did.

First you need to find a place and the right time to talk to him/her. If they don't wan't to talk to you remember that you can't force them so just give them time. Remember patience is a virtue.

Whenever your partner is ready to talk start off by apologizing. Show a deep regret if what you are looking for is to get another chance, but if you now just want a frienship just apologize softly to gain the friendship, don't exaggerate.

If you have a lot of pride in yourself don't be afraid to cry. Just remember that sincere tears come only when you truly feel something. Do not force your tears, people usually can tell when you are doing this, and if your partner finds out, you will only make things worst.

Explain to your partner the reasons of why you cheated and how you guys can work on those problems. This is like a paper, you know, problem, cause solution.

After you have apologized mention a couple of solutions on not only how your relationship can become better and stronger but also how you can do that.

Don't put pressure in your partner. You have to hear their side of the story, how they feel about it, and if they can forgive you. Forgiveness doesn't happen over night. You have to give it time but as time goes on don't keep on apologizing because you will only keep on bringing the subject back up and that can cause a lot of problems.

Do not, argue back. It was you the one that made the mistake and you have to listen and not argue. You just have to sit down and listen. If you argue back you will only be making things worst.

Your partner might and might not forgive you, it all depends on the way you cheated. Don't expect your partner to forgive you because it is not that easy. Just remember to be honest and if forgiveness is given to be honest from that moment on. If you feel that something is not working in your relationship, then sit down and talk to your partner and figure things out, and don't take a wrong step. 

Finally remember to never do the same mistake again. The most important thing in a relationship is trust. I say it from experience. Once trust has been ruined it's extremely hard to rebuilt it again. Don't give your partner anymore reasons to doubt you instead love them unconditionally and don't forget just to say i love you or you are a great friend, but also to show it!