Tomorrow is a new day, no point on focusing on whatever "damage" you may have done. We've all been there. Its just time for you to decide to stop the pursuing, pleading, relationship talks, and the outbursts.
Time for you to GAL and detach. If you are still the financial provider then the first thing that needs to go is the internet. Too bad, you will no longer finance his infidelity. Don't do his laundry, don't cook his meals, and most importantly don't react.