By Amy Reast

A relationship psychologist says couples' " parallel living " can lead to heartbreak - and shares how to fix it before it's too late.

Dr. Kathy Nickerson , 50, says long-term relationships can begin to feel stagnant - even when living with a partner.

The clinical psychologist, from Orange County, Calif., suggests couples who share the same space, meals and routines can begin to feel emotionally disconnected and more like roommates - a trend known as "parallel living".

In a world where people are constantly on their phones, Dr. Kathy believes relationships can suffer when the time couples spend together is no longer quality time and it can lead to heartbreak.

But often by the time partners realize what's happening, it's already too late - so Dr. Kathy shared how to

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