I have seen this kind of situation a lot on movies, video games, comics and other media. Basically Alice and Bob are having a very serious, heated and hostile argument, involving a lot of shouting and even physical force. There are no hints that romantic and sexual activities could even take place. Then while they are in the middle of intense arguing, suddenly things get quiet for a few seconds. And after that Alice and Bob start kissing and making out.
What is the psychological explanation for this kind of situation (or "trope")? Why could an argument turn into a make out session? Does this happen in real life or it's just another writer's device?