It sounds good "on paper". I would wait until he follows his words with actions, and then still be careful.
FRom my own experience (which doesn't have to be the same for everybody else):
My ex promised me SEVERAL times that she would do something as well. The first time after her first rage at me, destroying a picture i made for her birthday that she called "the most beautiful gift someone ever gave to her in her life". She aknowledged it wasn't normal what she did and she would seek help. Empty promise.
Once i started seeing a psychologist myself she promised to go too. Empty promise.
After one of many failed recycle attempts she begged me to go with her to a psychologist. Empty promise.
After another failed recycle attempt, she said she talked with her mom about everything and she would support her in finding and going to a psychologist. Empty promise.
I could keep going... . countless empty promises.
In the end she completely forgot about all of her promises, and went back to telling me it was all my fault. At one point she even halfway admitted she just said those things so i would come back.
Could be all different in your case, but i would be VERY careful with trusting his words. Wait and see if he actually follows through. And even then... . be careful... . i know my ex would have went to the lenght of going to a psychologue just because she knew i was waiting for that (that she would show me she actually saw part of our problems in her own actions and that she would show me she was willing to do her part for saving our relationship). In the end she told me "Now i am ready to go to therapy with you and your family"... . can you imagine this, she didn't want to go alone... . she wanted to go with me AND MY PARENTS (because she hated them after they didn't support her when she told them i am a bad partner (for not buying her a bigger flat and car and what not... . )).
She didn't want to go to therapy because she thought there was ANYTHING wrong on her part, she wasn't "ready" for that. She was "ready" to tell a psychologue what terrible people me and my family are and put all the blame on everybody else, that's what she would have been ready for.
Please be careful.