PLEASE HELP! He Blocked Me For No Reason, What Should I Do?

I got to know this young, handsome guy sometime last month.

Two visits in the space of 3 weeks and he was all over me.
But I wanted him as a friend and nothing more.
The nigga is 5 years younger than me.
On Monday he came visiting, we talked, laughed and had good time (no sex) then he professed his love for me, and I told him same thing: I don’t believe in love blah blah blah.
I asked him for money, and he gave me 4k.
Today I called him and told him that I wanna travel to see my fams that he should give me 5k.
… But he sent 3k, and I thanked him.
Later, he blocked me on all available network.

What Went Wrong? Why Will He Do Such?

Insults and bashing are expected.