They may be regulated by law, custom, or mutual agreement, and are the basis of social groups and society as a whole.
The study of interpersonal relationships involves several branches of the social sciences, including such disciplines as sociology, communication studies, psychology, anthropology, and social work.
We tried to make it work as best we could, but ultimately the distance worked against us.
More recently, Helen Flanagan – Coronation Street star and mum of one – revealed she was filming in Manchester for the soap, while her partner Scott Sinclair resided in Scotland, after he joined Celtic Football Club at the start of the season.
So how do all these celebrities survive their long distance relationships?
Well, we spoke to the UK's top Celebrity Dating Expert and Dating Coach – James Preece – who gave us some tips on lasting the miles. We are lucky that we live in an era where we have access to video calling and Skype.
Use them as much as possible as it's the closest you can be together. Instead, watch the same film at the same time or eat the same meal.