It had been a while since the apocalypse, and in that time you were surviving on your own, or well, you were, when you met a large robot on one of your searches for food

Although there was something about that robot that wasn't like... the others... and it was very very very curious, but with everything, food, water, and also human needs, oh god

That brings us to the present, you were in a chair next to the operating table in your workshop, Xbot was lying on it and you were fixing his arm, when you realized that he wouldn't stop to look at your breasts..