I have a boyfriend but like a another guy?

I have a boyfriend of two years but have been having a strong crush on a cute guy at work. The thing is, the guy at work has such an amazing personality. He is very funny, all the girls are all over him, he is kind and just has a good game. He makes butterflies go through my stomach and sometimes i just am lost gazing in his eyes, i can't help it.

What do i do?
I have a boyfriend but like a another guy?
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