It's a strange question.
My DH cried at my DS's graduation. I was so happy and proud that day, but it was my DH (their long time step dad) who was in tears. Also at important sporting occasions, funerals, and when thinking about certain relatives who are no longer with us.
I cry very rarely.
Some people cry lots, some hardly cry. One thing I've learned - how much you cry isn't an indicator of how empathetic / caring you are. I had a friend who cried at the drop of a hat. After a while I realised it was only ever at things that affected her. She never felt any sadness or sympathy for anyone else. Conversely, I rarely cry but it doesn't mean I don't feel.... it just doesn't come out in crying for me. And, on the odd occasion I do cry, I much prefer to do it in private. It's just how I am.
So if your DH doesn't cry in front of you. a) it doesn't mean he never cries, and b) even if he never cries, it isn't an indicator of how he feels. Don't judge him for it.