Is it Love or Dependancy?

Sometimes being with someone for a period of time, is it love or is it dependancy?

Does that means that your unwillingness to leave the person is becoz u love him?

Or could it be that you are used to having him around, used to the way he takes care of you, used to the way he lets you throw your tantrums at him, used to seeing him before you sleep and seeing him when you wake up?

How do you know when its love?