Destiny with Werewolf [ BL ]

In the world, which seemed normal form the surface but hide supernatural creatures and beings from the eyes of normal people.

Arc who just turned into supernatural beings which does seem to him like he had become a monster caused him to go insane and triggered the self destruction that all supernaturals used as a last method to die without leaving anything of existence behind except soul which go to afterlife of hell or heaven as normal beings.

But he was saved by werewolf named Derek hale who thought that personality and situation of present Arc was similar to his past self.

This saving was out of pity and sympathy, But Arc doe not even know that what kind of supernatural did he became, and his affection for Derek hale have increased overtime so much that he have started feeling for him, but. Derek hale already have a girlfriend. And another big thing is that from his relation with previous boyfriend who was later discovered as the werwolf and impregnated him, which should have been impossible for a male, Arc was completely unaware of this.

So, now what would happen, does Arc will have courage to confess his feelings to Derek Hale?
Would his confession be rejected if he did confess?