Partner Experiences?

So my partner (26M) and I went through a TFMR last week. I know he is having just as hard a time with this as I am; when we got the amnio results back he sobbed in a way I have never heard before :( Now that the termination is behind us, it seems like he is having a hard time expressing his emotions and has receded into himself. I can tell that he is hurting but I don't know how to help him. I've tried to make sure we are getting out of the house everyday and that he is doing the things that bring him joy (biking, yoga) but if anything he seems to be pulling further away. I can't imagine what it is like for him not only to lose his baby but also have to see me go through the physical pain too and feel helpless.

Are there any partners who can share their experiences and what helped them heal? And/or moms who can speak to how they helped their partner?