I cry everyday when I think about Sparx... cries of joy, though. ^^
Basically, it's okay to cry. Holding your emotions inside doesn't get you anywhere. It's best to let your emotions out all at once so that you do not go into stages such as depression. For example, if you keep all of your sadness bottled up, sooner or later, all of that sadness will eventually force you into a state of depression. That's why it's best to let it all out immediately when you experience it instead of trying to just hold it in and forget about it.