When it comes to love, science has been a bit slow to realize that romantic relationships don't have to be between one man and one woman. But, a lot of research can be salvaged since the various stages of love (excitement, nervousness, attachment...) are experienced pretty similarly for anyone, regardless of gender, culture or relationship structure. So, what does happen to our brain, thoughts, and behavior when we fall in love? Neural data tells us that it's like addiction or even OCD, but how useful are these comparisons really? We've also got some science-backed practical tips about what you might want to try on a first date, and the best ways to get over an ex.