I have a huge crush on her but she has a boyfriend.
How are you feeling about this situation?
I feel so bad I'd like to kill myself.
Feelings are hard to stop but you can control yourself and stop yourself from interfering in another relationship. It is wrong and it will hurt many people including yourself.
I'm going to take a shot every time I think of her.
Is your plan to make yourself too drunk to peruse her? It would be better to find something else to think about.