Demon Jared and angel Jensen fic
Trying to find one specific fic I read a while back. Basically angel jensen went to earth and went into a rut and got Jared pregnant who was a demon. When he found out he was a demon he was really awful to Jared who was super sweet and actually loved Jensen and the baby. I remember at the end Jensen took the baby away back to heaven but had fallen in love with Jared at this point.