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The romance between two members of band Take That; Gary Barlow and Mark Owen. Any fan is thoroughly convinced of Barlowen existing.
Person One: 'When Gary And Mark shared the microphone the other day, it was so cute'

Person Two: 'I know, such a Barlowen moment.'
by AmyBarlow December 03, 2009
Barlowen, is Mark Owen and Gary Barlow from Take That together romantically. Normally found in a fanfiction on Live Journal or another website.
God, the way Gary smacked Mark's arse in the last concert was proof that Barlowen exists!
by XxGaz'sGurlxX February 13, 2009