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Songwriters and
have long-claimed that love is a drug. Scientists have gone a step
to prove this. They conducted tests on the romantic
of prairie voles. Different pairs of the mouse-like
were tested for levels of dopamine. This plays a
in our seeking pleasure and
things. The researchers said the voles released a lot of dopamine when they were with their "
partner". Dr Zoe Donaldson said
of the voles' brains lit up "like a
stick" when they were reunited with their
.