How to quit liking someone?

Ok here goes. Very weird situation. There is this girl i work with. the first time i ever had a real conversation with her, i said something stupid and it made her laugh. her smile/laugh made me stammer over my next sentence. now i have never been a man with the lack of words. not shy around anyone. anyway so time progressed and we got to where we would sit in the parking lot after work for about an hour or so a night and talk. well she went to leave and i was going to give her a high five but she grabbed my hand and i pulled her in. wanted to kiss her but stopped myself as we both had significant others. so we hugged for about 5 mins lol. i could barely catch my breath and the butterflies in my tummy were going nuts!! so after a couple days i left my significant other. not just because of that but we had been done for some time. just going through the motions ya know? so i found myself listening to lovey songs thinking about her and stuff. so we kissed a few days after that and the electricity flowed through my body like i just stepped in a room full of static elec. so her friends said she felt the same way as well. then we went to a funeral for this girl that died from work, talked her into coming and taking a nap with me. and i felt like i was in heaven in her arms. so at this point i obviously like her way too much. so the next night i got her to spend the night with me. of course we had sex. then we spent this whole 3 day weekend together. everything was fine until this morning/late last night. she left her significant other but he has to stay there until friday cause he has no place to go until then because she has been supporting him for 3 yrs. so today she is acting weird. i know whats wrong im not stupid lol. she keeps saying we are ok and things like that but her body language says something totally diff. maybe its all in my head. but point is how do i stop liking her???