Romance has a lot of conventions and cliches and any romance film wanting to do well has to abide by these conventions or it will not do well . For example you always find the film starting with the girl or boy falling in love with each other just by looking at each other the audience feels the instant connection between them . Unfortuantely there is always someone with the man they want and someone the audience knows is all wrong and is horrible. As the film goes on the charcters seem to see a lot more of each other as they start to fall for each other the distraction then trys to wiggle her way back into the picture but of course love prevails. No good romance film would then  be finished if it was happily ever after a major argument threatens the relationship but as it is all about to end and the girl will leave the boy comes to his senses and catches her before he leaves. He then gives her the kiss the audience wanted and finally it is happily ever after