Because love means nothing to them!
Let me count the ways... Five.
Put both of them in the trunk of your car...drive around...open the trunk and see who is happy to see you.
Punchlines that got married and settled down.
They always get cold feet! I'll show myself out.
You're probably Australian. EDIT: I mean venomous, not poisonous. I am sorry
Two. One to hold the ladder and one to screw your mother - I mean light bulb!
Because love means nothing to them.
Because to them love means nothing.