Klopp's return to Dortmund ends in draw
Liverpool score away goal through Origi
Sevilla, Shakhtar & Villarreal win other first legs
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We asked you why Jurgen Klopp was worth all the hype ahead of this game. Here are some of your answers...
Kaushik Gorai: Took Mainz to Bundesliga, established them. Won trophies at Dortmund, And as all can see, ultimately Improved Liverpool.
The Football Guru: It's simple, it's an oft used phrase but Klopp probably invented it. "he wears his heart on his sleeve"
Borussia Dortmund v Liverpool (20:05 BST)
Some early Liverpool team news... Divock Origi starts up front, with Daniel Sturridge on the bench along with Roberto Firmino.
Borussia Dortmund v Liverpool (20:05 BST)
BBC Radio 5 Live
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Image source, Getty ImagesJurgen Klopp is undoubtedly tonight's main protagonist. He achieved huge success with Dortmund and was one of the most in-demand managers in Europe before Liverpool snapped him up. For tonight's talking point, we'd like you to answer a simple question: why is Klopp worth the hype?
So, whether you are a Dortmund fan, a Liverpool supporter or a backer of any other club, we'd like to know if you think 'the normal one' is worth all the hoopla and if so, why?
You contact us on Twitter, using the hashtag #bbcfootball, or via text on 81111.
Borussia Dortmund v Liverpool (20:05 BST)
Image source, Getty ImagesSo how has Jurgen Klopp dealt with being the centre of attention for this return trip to Dortmund? Why, how only Jurgen Klopp could deal with it, of course...
"A lot has been said but it is easy for me as I just have friends here," said Klopp.
"It's better to be here than North Korea or something. I don't think about my situation, not for one second."
You've got to love the man.
Borussia Dortmund v Liverpool (20:05 BST)
Borussia Dortmund v Liverpool (20:05 BST)
But Jurgen is now trying to make a go of it with someone new...
Image source, Getty ImagesAnd by the looks of it, he is thoroughly enjoying himself...
Image source, Getty ImagesBut tonight he has to deal with that difficult moment when you're out with your current partner and bump into the ex...
Image source, Getty ImagesLike Jordan returning to face Chicago, Thierry as a Barca player against Arsenal and Roy Race bringing Walford to Mel Park, it's going to be emotional.
Borussia Dortmund v Liverpool (20:05 BST)
Seven years...
Image source, Getty ImagesFive trophies...
Image source, Getty ImagesMany happy memories...
Image source, Getty ImagesAnd even more adoring fans...
Image source, Getty ImagesJurgen Klopp and Borussia Dortmund was some relationship.