Planning a holiday, driving each others' cars, having a key to your partner's house, being invited to family gatherings, posting a 'loved-up' photo on Facebook, are all signs a relationship is serious and past the 'seeing each other' phase, according to a new survey.
Researchers questioned 2,000 people to reveal the top 50 things which indicate a couple are in a committed relationship. Check on it below and tell us what you think...
