Steve Rogers had everything. He was an retired avenger and set for life but when his sister and her husband died and he gets set with his four year old old niece he had no idea what to do. Luckily for him his new neighbor just so happened to be a babysitter and in need of some extra cash. The single-dad (the words wrote themselves and it got kinky) Steve Rogers fic no one asked for (Cover pic not mine obvs)