Every professional footballer will claim they give everything to get the better of their opponents on the pitch.
But what is one of those opponents is someone you're deeply in love with?
That was the surreal situation Swiss internationals Alisha Lehmann and Ramona Bachmann found themselves in earlier this season.
Swiss footballers Alisha Lehmann (left) and Ramona Bachmann are in a relationship but also play for rival teams in the Women's Super League
Bachmann (left) plays for Chelsea as a striker, while Lehmann lines up for West Ham
A new BBC Three documentary tells the story of what happened when these lovers came up against one another on the football pitch back in November
The documentary, called 'Britain's Youngest Football Boss' goes behind-the-scenes into their home life ahead of the West Ham vs Chelsea league fixture
The pair are in a relationship but play for rival teams - West Ham and Chelsea respectively - in the Women's Super League.
And when those two London rivals went head-to-head back in November, Lehmann and Bachmann had little choice but to put aside their mutual affection for 90 minutes.
Their story is told in a BBC Three documentary called 'Britain's Youngest Football Boss' which follows the fortunes of 19-year-old Jack Sullivan, managing director of the West Ham Women's team.
The tale of Lehmann, the 20-year-old West Ham forward, and Bachmann, the 28-year-old Chelsea striker, is told on the fourth episode of the series, just released on iPlayer.
The pair find themselves in a surreal situation when they line up against one another in a game
The shared affection for one another is evident in the girls' social media updates
