A boy refused my confession, but later he contacted me more frequently. Why?

First of all, he is playing hard to get. In fact, he likes you, but he refuses you because he wants to be different. But he cares about you, so he keeps contacting you.

Second, he is a calculating boy. He wants to hang you and find another girl. If he doesn't find the right person, he will come back to you, so he has been having an affair with you.

Third, he is really afraid of your embarrassment. You tell him clearly that he is embarrassed to refuse you, so he wants to be your friend and brother and sister to ease this embarrassment.