How have you all over come or better delt with irregular emotions?

Last night I was hanging with a girl I really really like. We hung out all weekend and my anxiety was saying she was gonna cancel. During work she were still good with out me saying anything about it then I had a shit end to work. My emotions for work got tangled up in my anxiety about her and I ended up crying in her car about her and me to her for 30 mins I said everything, she was sweet about it saying no its okay say everything I rather we be open then not. After i reorganized my self we continued with our plan and went star gazing.

This girl doesnt want a relationship unless it flys out of no where and just boom looks like were dating now oops. And I feel I cant do that because of my heightened emotions.

This isnt the first time it even where it always happens. I feel ni one cares, my teacher will lose homework, something doesn't happen correctly and everything will blend and I'll break down. It's worse on my come down and that was why last night happend and she knows that to but I want to know how to change it so it's not so volatile to me and it doesnt look like I have the emotional stability of a 6 year old some days