Did I do anything wrong here?

My partner and I stopped talking about 10 days ago because after 4 years of being strung along I told him i need something consistent and mature so we're either officially together or we're done, and since then he stopped contacting me without having the decency of actually giving me an answer! I've known this guy for 10 years and we were best friends before we started dating... so how can it be that easy for him to give me up like that? without even contacting me! and for thee past 10 days he has been posting pictures with girls and going to parties its like he just doesn't care about me at all!

Did i do anything wrong? Was it wrong to actually wanting to reach a decision about our relationship after 4 years of this?
Did I do anything wrong here?
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