Why are guys so confusing?

My ex and I broke up about 2 months ago. A month after no contact he added me back to facebook but didn't say anything; I messaged him twice because I had received some of his mail and he got a message from his work. I let him know about said messages and he said thanks and asked how I was and that was about it. I broke up with him for very strong reasons but we both said maybe in the future something may work out between us. We separated on good terms and we both care and love (at least on my side) each other dearly. My question is... is he not starting conversations with me because he doesn't want a relationship and just wants to be friends or is he possibly feeling rejected and wants me to make the first move. I also find it odd that I cannot see his friends list on facebook...
Why are guys so confusing?
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