Relationship issues

My boyfriend and I have known each other 3 years. Dated for 2 and we live together. Last June we had troubles because he decided he didn’t want children, after a while I decided I was okay with that. We live a luxurious life style and both agreed if it happened we’d take it as it comes.

Fast forward to last night he told me he thinks he’s changed me too much and feels guilty. Not sure if we should work on this or let go. He told me he’d do couples counseling and seems really eager to go. (Ive been calling around all day).

Would you work on this or just throw it out? I love him so much, he’s my best friend and I can’t imagine myself without him.

The only thing I really want is marriage and he said it scares him.

Back story, him and his ex were together 5 years and one day she told him she needed space and a week later completely moved out. So I think he has a lot of trauma associated with relationships.