Never in my wildest dreams...(a depressed harry/harry is snapes son fanfic)

As snape sat in dumbledore's office reading a letter adressed to him by non-other than the love of his life, Lilly Potter, he had tears in his eyes as he realized that the quiet world he always knew would soon be interupted by the laughter of a child he never knew he had.
Soooooo...in this fic snape and lilly had had an "affair" back in school and, unknown to snape, lilly had gotten pregnant. This was before she ended up with james. Years later lilly had harry, it was only coincidence and soem would say luck that he looked so much like james even though he was snapes child. the reason she had had harry so much later is becuase she had a delayed pregnancy (just pretend that's a thing) but she decided to never tell snape or james about it. but when she realized that both her and james were going to die she wrote a letter to snape explaining things and sent it to dumbledore telling him not to give it ti snape until harry was five. soo when harry turned fiive dumbledore gathered them both up and explained and harry lives with snape and also harry was absued at the dursleys before he went with snape so he's like super messed up and was diagnosed with depresseion and all the shit. so i suck at descriptions but basically yeah just read it.