What to do when your feel overwhelmed with emotions?

i am overwhelmed. for the first time in pretty much forever, i don't know how i feel. I always, good or bad, know exactly what emotion i am feeling at that exact time. but now, i don't. i am trying to get over my ex, but its really hard for me, because things may pick up when we are together again. also, i had a crush on someone else who has a gf, but flirted with me anyway, then one night stopped flirting with me, and now i feel like he doesn't like me at all. and now, i guess i feel all alone, but its more than that. i have so many emotions right now, i have no idea what they all are...i need help, how can i get over being alone. what do i do to figure it all out??? please help, i feel so depressed and helpless...sorry to sound so pathetic and pitiful, btw, I'm not usually like this.