You got to realise
that every relationship is unique.
And because they are different, they all have different ending
(positive or negative) and therefore, different experience.
Being haunted by old relationship is a sign which signify a lack of
self understanding why your previous relationship is abominable.
You are haunted because you fear such scenario would recreate
themselves into your present Love - but have you learn those
lessons, this fear wouldn't even brought forth into your
relationship because understanding would have made you stronger and
grown up.
And because you are so afraid, you will unconsciously behave in
such a way that it REPEATS what has happen into the present and in
turn, create a reiterated future. It is like you using the same key
to make the same trigger - your behaviour is the key and the
trigger is a self-fulfilling prophesy that comes true based on the
SAME key you used in the past.
Those enigma that we hid in our subconscious, do not be afraid to
tackle them head-on. These past issues must be handled properly and
appeased the tension from within, so that you can enjoy the fruit
of your relationship and NOT having to worries incessantly while
leading a new relationship during its honeymoon period.
Apply what you thought you have learn from your previous
relationship to avoid costly mistake. But at the same time, give
yourself a break. Don't take everything too personal and serious
that it hinders your progression in your relationship. Until when
you hit something, just sit back and revel in the ride. 
Cheers
