Dating apps are changing the way people in the UK look for sex and relationships. With hundreds now available, some of them aimed at specific groups of people, Newsbeat’s been looking at what effect they can have on their users. Most use dating apps as a part of their day to day lives - for some they’re an addiction, a lifestyle choice or a lifeline. Rick Kelsey takes a look at app dating in the UK in 2015 through the eyes of users.