Psychologists warn that when a romantic relationship becomes all-consuming, to the exclusion of other relationships and interests, it can be unhealthy and poor for mental health. After her friend of 10 years got into her first relationship, Ms Tan noticed a change in her good friend's demeanour "quite quickly". The friend stopped replying to messages in their chat group when they asked to meet and she also did not initiate anything. "After this went on for months, eventually I stopped reaching