Rotten Angel is a pretty straightforward game, but here's a guide to those who needs it!

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Enjel Ending

• During the first choice, choose anything else other than "You have not talked to him about this"
• During the second choice, choose "...happy. You truly loved Evan, despite his awkwardness."
• During the third choice, choose "...you've told him how uncomfortable you were with how much Enjel was trying to approach you."

Evan Ending

• Either pick everything else that doesn't lead to Enjel's Ending or,
• simply pick "...he happened to see both you and Enjel leave a hotel together" regardless of your earlier choices