✔ 最佳答案
I saw this one show in which this one guy cries only when he's really happy. The main point of the show is to help people with their problems. The guy tried to propose to his girlfriend three times but failed all three times because he kept crying (really hilarious, actually). During his dad's birthday, he cried. The people who run the show said he should try to propose to his girlfriend right there, and he did it, barely holding back his tears.
Your situation seems similar to his. I guess it's just part of your whatever.