I cheated

So I recently got caught cheating on my bf ... nothing is the same we are trying to work things out but how do I prove to him that I will never do this again how do I reassure him what are some things I can say to him this was a mistake and I regret it!! I love this man sooo much!!! How do I prove myself ;( he doesn't call me baby anymore things have changed :( we still have sex though I'm scared and feel like he's just going to treat me like a hoe now ... what I did was hoe why anyways