We do things in life because we are looking to fill some need...
Lets say that you are lonely (in THAT way)... it would make perfect sense that you would pursue someone whom was filling those needs for you...
So the question isn't whether you are lonely... the question is, what needs are driving you to FEEL lonely? What is the deeper need within you, that is creating this scenario for you?
Is it connection with others?
Is it simply sex?
Is it a desire to feel significant through someone else' eyes?
Is it a desire to break the monotony of an otherwise independent life?
Take a moment to consider what is driving your actions...