Does it come as any surprise?
In a recent lecture, psychologist JoAnn Deak made a startling comment on love:
"We now know that the chemical changes in parts of the brain when you're in love are equal to that of heroin doses or high cocaine doses, so you kind of know — if you have to ask if you're in love, you're not."
There are plenty of studies that confirm her statement. When you're head over heels in love, your brain releases a flood of dopamine, also known as the reward hormone. This is responsible for the feeling of euphoria that accompanies falling in love. Funnily enough, it's the exact same thing that happens to your brain when you take cocaine or heroin.
In one study, psychologist Helen Fisher found that when subjects who claimed to be deeply in love looked at a photograph of their partner, the brain regions that became active were the same regions that light up when someone takes cocaine – or has an orgasm.