Case in point: You may not remember that Brooke Shields and Liam Neeson dated back in the '90s, but they were so serious that he proposed to her—twice. Obviously, the relationship didn't work ...

Liam Neeson is single, but don't expect to find ... He dated Barbra Streisand, Helen Mirren and Brooke Shields before marrying Natasha Richardson in 1994. Neeson dated Mirren, 79, for four years ...