ANSWER:
What you’re doing is totally prohibited in Islam. You must cut all communications with him immediately and block him from everywhere if you don’t want to end up in Hellfire.
It’s very obvious he’s playing with you and using you as a pass time and could even blackmail you and ruin your life forever.
Fear Allah and repent to Him with sincerity and ask Allah for forgiveness with deep remorse and never go back to such a sin again and never degrade yourself like this.
Kindly refer to the following link(s):