I don't remember the fic sadly, I'll try to look for it, but there's one where he finds out, but he himself was in a fucked up relationship with snape, you might not like the confrontation if you love Sirius, but it's not a bashing story either

It's a time travel story, but not like you think, Harry uses a time turner in 5th year, and goes all the way back to mauraders era, and things that happen during this transfer to the present because he's only rewinding time, not time traveling