Why I miss my male excoworker so much?

I have worked from office for 1 year. There was a coworker few years yonger than me that I was friend with. I had great time with him and we cared for each toher so much even that in some cases we had bad conflicts about the work. I think that during one point he was making a little bit more clear that he had feelings from him but Injust keept changing subjects since he was younger than me and I couldnt considered him.
Once i was telling about a date that I had with a guy friend and how he tried to kiss me while i was drunk. My coworker was furious with this story and told me that it was me who didn't take care as a lady after myself. After this point he was keeeping me a little distance and also me. I become friendly with another group of friends and being cold to him. After one mond j decided to leave the job for other oppurtinities. My last day that guy was really really sad and he said to me to keep in touch. Now months has passed he texted me twice that he missed me...

the truth is that i think about him the whole time... but i have trust issues... and i dont know what is going on.. i really miss him..

am Injust bored or i have true feelings for him?

Why I miss my male excoworker so much?
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