Why did he do this?

My ex, and who I still care about, but he blocked me not long after our break up.
I have a friend who still is friends with him, and I know he took it hard. My friend keeps me up to date, and I was curious. I know he started dating someone a few weeks after we broke up, and they dated for 7 months and recently broke up about a month ago.
I noticed he unblocked me, and hasn't mentioned me to my friend, but I know he blocked the girl he dated and won't unblock her or answer her messages.
Why would he unblock me, and do what he did with his now ex?
Why did he do this?
Add Opinion