Search Results: falling for best friend

So I this guy and I knew each other in real life, we kind of had the same group of friends. Anyway he added me on facebook and we started talking and eventually started flirting and this went on for a few weeks before he wanted to meet up. The attraction was mutual but I wasn't really interested at first only because it just wasn't the right time for me so anyway we both agreed to keep the option open if I ever changed my mind. We continued to talk and flirt daily. In time I decided that I would like to actually hook up and invited him over. Somehow he didn't get the message or didn't realise that I wanted him to actually come over that night. Anyway we ended up talking almost everyday for at least 6 months in that he ended up getting back with his girlfriend and that was ok with me as I didn't really develop feelings for him I kind of just wanted a one night stand even tho he once said that he could see himself falling for me and wanted to see where the "situation" could go. Anyway I wished him all the best and we never spoke again. Then I realised that a couple weeks later he had blocked me. Wether or not it was his girlfriend I don't know but if it was him then why?