Help me find this bl

It’s about a guy who almost got r*ped by his bully. He wanted to jump across a bridge but changed his mind when he was about to fall. A fallen angel helped him from falling down the bridge. The said angel told him that he’ll help the guy avoid the buly who tried to r*pe him. But with condition; for the human to give him his ‘soul essence’ ( or wtv, my memory’s a bit flawed) by doing intimate acts with the fallen angel. However, the fallen angel is actually kind of a fraud who takes advantage of the guy and doesn’t want to actually help him. He just needs the guy’s soul to keep living in earth.

Sorry if I’m not being clear, english is not my first language. Please help me find this if you know. Thank you in advance!!