Use "shack up" in a sentence

1. In the neighborhood where Proctor grew up, children grow up hurting without their fathers, watch their mothers shack up with other men, live in poverty, become sexually active, degrade girls, and memorize sexually explicit songs with the N, B, and F-words

2. Often children’s moms and some of their teachers and athletic coaches shack up

3. One of the greatest threats to family stability is that men and women can shack up and be members in good standing in churches, schools, sports, and government structures that follow the social gospel’s philosophy of allowing individual immorality