What does it mean when a man’s girlfriend makes him almost cry?

My boyfriend is from another region of my country, so he has to apply for a passport to visit my city, he went to his hometown to try to get one but wasn’t able to get it.

So yesterday, I was jokingly and kinda unhappily saying “oh I’m so sad you weren’t able to get it.” Like multiple times, and he got upset and almost cried but tried hard to hold back tears.. prior to him almost crying, he had told me to stop saying it because it made him upset that I was upset and said he was emotionally weak like a paper. I thought it was a joke because I’ve always thought that he doesn’t really care about me, and so I said if he didn’t successfully get the application done because he just didn’t want to.

Well I do feel bad about it and seeing him cry almost melted my heart. I’ve never thought he would cry and get emotional because usually he looks cool and isn’t attached to me
What does it mean when a man’s girlfriend makes him almost cry?
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