It was my last day at work and didn't say bye to my crush, help!!

It was my last day at work today and. After a year in a half of crushing on my male friend and somewhat sensed he felt the same since he was super sweet and always helpful. My last day I said bye everyone they gave me hugs and took me for lunch but my crush was no where to be found I was so sad I waited around to see if I could see him but I didn't get a chance to say bye and I was planning to give him my number my last day any advice? Is all lost?
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Update! Hey guys thanks for the advice! I got his number from a coworker and then I text my crush telling him I didn't get a chance to say bye! " And he text me back and suggested we go out sometime whenever I wanted! Aww! Then he friendrequested me on Facebook!
It was my last day at work and didn't say bye to my crush, help!!
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