I would consider counseling as well- it really works wonders in relationships as well as for individuals. But I would also recommend just maybe taking some time apart, just having a healthy break. It doesn't sound like an overall healthy relationship especially with the cheating that's happened on both ends- but I definitely think if you both are in it 100% and it's something you both desire to work towards, it CAN work. Anything is possible, as they say. But you both have to work hard for sure to get to where you want to be, and it won't be easy but it will definitely get there. I wish you the best, stay strong!