Relationships are sensitive bonds that can be trickier to maintain than jumping rope while hula hooping on a bed of hot coals. Some couples work different hours, some have extra responsibilities like carting the kids around, which makes everyone just want to fall into bed at night. A few brave souls even defy the odds and the miles to stay together long distance. No matter the situation, it can be really easy for the fires of romance to die off quickly. Luckily, there are more than a few apps that will make you look at your iPhone as one of those spinning heart-shaped beds. So I guess the question is: Is that an iPhone in your pocket or are you just happy to see me?