What should I do? I think I kind of have a crush on my coworker and I hate it.
Sorry to be nosy, what do you like about him?
It's okay, I just think that he's really cool
I think everyone knows that romantic relationships with co-workers are unacceptable and I know some companies if you get involved with colleagues you will be let go. I would probably tread carefully if you want to keep your job.
I'm threatening to spill secrets if he doesn't agree on marrying me.
You cannot blackmail a coworker into marrying you. It's wrong to even consider doing this. It's likely that he would file a complaint against you if you did something like this.