When you move to a new city, it can be hard to make friends. You’ll probably have a number of casual acquaintances – people who you know on a basic level, but with whom you don’t have a significant relationship. Over time, some of these may become good friends or close friends – these collocations refer to friends with whom you have an especially strong relationship. Do you believe in love at first sight? That’s when two people meet each other and immediately fall in love – perhaps because they have strong chemistry – this expression describes strong compatibility or connection between two possible romantic partners. Some people believe that their significant other (their boyfriend, girlfriend, husband, or wife) is their soul mate – this is a poetic expression that means that two people are destined to be together.