Borussia Dortmund's slogan "echte liebe" - or "true love" - says it all.
Football is all encompassing here, it reaches ever facet of life. One fan even leaves the club shop having just bought a Borussia Dortmund-branded lawn mower. The chance to experience this love affair is attracting more than 1,000 fans from England to every home match.
It is a scarcely believable figure, but walk around the stadium and British accents are audible among the 80,000 at Signal Iduna Park. "We jump on the Channel Tunnel train," says Matthew Gerrard, from Kent.
"We make a weekend of it. With tickets, accommodation, transport, this trip will cost £65. When you think it cost me £51 to see the Arsenal game last season, you can see the benefits."
"Why are tickets cheap? Football is part of people's lives and we want to open the doors for all of society. We need the people, they spend their hearts, their emotions with us. They are the club's most important asset."