Hello Blue_waves: I'm sorry you & your bf are experiencing this difficulty.

The good news here, though, is that it sounds as though your bf is taking responsibility for what he did & is doing what needs to be done to correct the situation. That is to be celebrated!

A lot of men would not have the courage, or the insight needed, to do so.
Now, clearly, you have been deeply hurt. This is something that is going to take time to heal. You may want to consider seeing a mental health therapist yourself, if you're not already doing so, so that you have someone with whom you can process, over a period of time, what this experience has done to you. Continuing to allow the thoughts & feelings you're experiencing to ruminate in your consciousness is only going to make matters worse over time, I fear.
Anyway... I see this is your first post here on PC. So... welcome to PsychCentral… from the Skeezyks!

May the time you spend here be of benefit.