There was a smutty shoujo manga that I thought was pretty cute, but I forgot the name of it >__< It was about a daughter who fell in love with her step father, but the step father only thought of her as a daughter. The daughter at first hated him, but realized she was falling in love with him. When the father found out, he decided to leave the house. But before he left, the daughter hugged him and asked if he could make love to her... >>_<< Anybody know what the manga is 😕

Lovesick? I read it a long time ago, so I'm not sure if that's what you're looking for.

thinking its Forbidden Phrase first story