Having a boyfriend but crush on someone else

So for starters I have a boyfriend. Recently my coworker and I have gotten closer. Tonight was our staff holiday party and what happened tonight I never expected to happen.

First my coworker and his girl broke up the day before because she got jealous that he was my friend and also because she’s crazy....

Second tonight at the party she was being a hoe grinding on most of the guys back to back. I noticed my friend get sad so I told him to dance with me and we will get her back but I honestly just wanted to dance with him. Of course I asked my boyfriend for permission. Fast forward for every fast song that was meant to grind it was my boyfriend, my back facing him and my coworker in front of me and that made my heart beat fast . Then he kept going it and at first I thought it was just to make her jealous but I swore that he wanted more than just that. But when I get home and asked him if it was just an act of making her Jealous and he said that why do I keep assuming that I like you. I don’t Alrighty and idk but i still have a small crush on Him