TheatreWorks’ ‘Because I Love You’ season opens by exploring the form and substance of relationships in 13.13.13, digging into the tenuous bonds that bind, and betrayals that break. William and Samantha live a good life. They have the perfect arrangement – William doesn’t want marriage, and Sam doesn’t want kids. Lynn, William’s ex-girlfriend and now oldest best friend, desperately wants to marry but cannot. Lynn also wants children. William does what he believes is reasonable to help his oldest friend with what she wants. Life is almost perfect for William and Samantha as they live together in unmarried bliss until things unsaid and things agreed unravel their agreement.