In the online dating world, it is easy for people to cross boundaries and find what they are looking for. For example, there is an app called Tinder that uses a matchmaking algorithm to pair two potential users. The app allows you to swipe right if you match with someone or left if you don't. If a person swipes right on you, then they have in mind a couple of things they're in search of - a long-term relationship, sex, or just an easy-going date.