What happens to a runaway teen if they get caught and what happens to a runaway if they're living with his girlfriend that is 19 and is pregnant and you are only 16 and she is housing you?

If the girl is 19 and the boy runaway is 16, and the female is also pregnant, than the female alone risks possiblity of a state charge OS statuatory rape and also losing her unborn child to a foster home or state facility. The boy will suffer no consequesce, although the state may mandate counseling.