How do married people get over their workplace crushes as quickly as possible?

Hi All, as the title tells it all, I am married, so does this man I work together with and I think he is also crushing on me maybe. I know it must be a proximity thing but I cannot avoid him as we work very closely in a team. He has kids and a wife, I have kids and a husband and I absolutely feel horrible and would like to get back to my normal self and just have this silly crush out of my system once and for all. Please tell me some things that help you overcome your crushes in similar situations, thank you!