I'm literally so emotional!?

I always get like this! I'm usually a super happy, silly, smiley person! But lately I been sad! Like so sad that I will cry for anything! And I never cry! I'm dating this guy and I love him so much he's so different and so when things don't go right with me and him or we can't hang out I'll feel like crying and sometimes I do end up crying! So basically what can I do to control my emotions? (I'm a college student, I work, and my dad recently lost his job and is drinkin again could that maybe be it)?