Her parents were divorced and living with her mom was stifling her. She wanted to live with her dad. She was just sixteen, though, so it looked like she would would have to endure two more long years before she could investigate things sexual. On a rare weekend visit with her father she asked him to take her on her first romantic date. In determining what "romantic" meant some investigation revealed she did not object to being naked with him. She didn't object to letting him breed her, either.
Joe is a bit of a workaholic. His daughter's wedding will change all that. His daughter's mom suggests he takes more time off. She suggests someone goes with him since he won't vacation alone. He agrees to take on a companion. Life for both he and his companion will not go as expected as they travel together.
Eddie is a widower who meets a battered wife and befriends her. Although he is old enough to be her father, the contrast between him and her abusive husband is immense. They quickly develop a relationship.
Thea needs a little extra money so she signs up to be a model for artists to paint and draw. She knew it wouldn't be normal modeling but signed up anyways.
He came back from the war a grown up man, but had to go back to school. The teacher was a young, beautiful woman. By accident he found out her inexperience and helped her out a bit.