It seems that pop stars only love one thing more than collaborating with one another and that's getting romantic with each other.
Couples within the same band is to be expected, people who are forced to share so much time and (cramped) space together are bound to give in to temptation eventually but what about couples from two seperate bands?
Katy Perry is the latest to try a romantic collaboration, spotted all over Coachella festival with Rob Ackroyd of Florence + The Machine, but she is far from the first to try an inter-music relationship.
Check out the list below to see who else has mistaken the music charts for a list of potential lovers.
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