I love crying when I am happy, but it doesn't happen very often.
The only moments I can remember are:
1) my surprise birthday party
2) seeing my parents after being gone 2.5 weeks in Europe
3) seeing Fall Out Boy (my fav band at the time) live
4) a few times I have laughed so hard that I start sobbing (people become concerned on this one).
It's just, tears of happiness are awesome.
I want more.
Make me cry and you may just steal my heart.