Inspiration is all I know...
Inspiration is all I have
So I deserve this...
I deserve your body on my mattress...

from The Weeknd – The Birds (Part 1) Interlude Lyrics on Rap Genius

Meaning

He uses his sexual escapades and drug taking as inspiration for his music. And in a similar way, his lifestyle is him rewarding himself for his music.
Therefore he deserves to have this night with her, he’s been working hard, and he can use this experience to make some music.

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