I really need help…

I’m a Mom of two…been living with my partner for 5 years. Came to light that he’s had a porn addiction and now I’m left feeling so betrayed by him. We’re going to therapy but…I feel so numb towards him. He went as far as sending a random girl our home address. Not only that but also when our son was in the hospital we had to stay for a week and during a night at his hotel I found a message of him telling a random girl where he was staying at. He says it was just a fantasy of his doing so, and I’m just lost. I’m so broken and I don’t know if I can get through this. He is very regretful, and embarrassed by this. I can say that. He’s going to therapy too and doing everything he can to make this work….But I’m just over here lost. It hurts.