Given Sirius' and Remus' ages when Harry was born, resenting time his parents spent with him seems...err rather pathetic.
I can see a 12 year old resenting that time, but two men around 20 years old? That seems a bit weak from my perspective.
However, it is a new take on the Marauders post Hogwarts that I can appreciate to a degree.
Looking forward to your next chapter.
Thanks for writing,
Matt