Why can't guys just be upfront?

Just recently this guy I had a brief fling with started ignoring me via text and fb, without telling me why. I felt a strong connection with him that I really never felt before I mean I can take it if someone tells me to f**k off but I can't take the silent treatment. It drives me up the wall and I start making assumptions. I liked the dude so I drunk texted him off and on for two months pretty much. It bothered me. Still no response. I stopped. Whats funny he never deleted me from fb even though I said a bunch of stupid things. I don't get it. Obvious he still wants to be in contact with me some how if he hasn't deleted me yet right? I have deleted guys who have done that to me, but he hasn't.
Why can't guys just be upfront?
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