Benfica are quickly into the action. They've cut down the Dortmund right twice already. Nelson Semedo beats his man and crosses but the ball is cut away from Rafa Silva.

Image source, Reuters

Lay down a marker, son. Adrien Rabiot sticks a boot in ahead of the head of Luis Suarez and embarks on a charge forward. He is forced to check but it is a sign of intent.

And we are under way. 

Image source, Getty Images

To mark the return of the Champions League for the knock-out stages, Adidas have slung out a newly-designed ball for the lads to boot about.

With the final in Cardiff, they've only gone and stuck a big old dragon on the side. If they really want to make things exciting, they should set it on fire as well. Tell me you wouldn't watch that?

It's not a Champions League night until they play the song. They're doing that right now as the teams make their way out on to the pitches in Portugal and France. 

Just time to stick the kettle on before kick-off. Alternatively, get your other half to do it. It's not like today is a special couples one or anything.

Image source, AFP

Final Score

We also have a Final Score for you tonight, which will bring you Champions League AND Football League updates. 

You can listen to Norwich v Newcastle commentary alongside 5 live webcam and the vidiprinter.

You can find that at the top of this page or via the good, old red button.

Look who's wanting to give you a Valentine's Day reminder about something close to his heart (see what we did there?)...  

Image source, BBC Sport

You can find out all about the FA People's Cup and how to sign up here.

I think L'Equipe are underselling this...

Image source, .

Suarez, Messi, Neymar v Di Maria, Draxler and Cavani. That'll do pig, that'll do.

Image source, Getty Images

We've got Champions League going on over here, but over there, on another bit of the site, there is a whole load of Valentine's Day Football League action going on. You can follow the Championship right here.

Just think of all those poor football widows, left at home alone while their other half heads off to spend time with their true love. 

The Heed Saddler: Alan Cork in his Sheffield United days in the 90s had a terrific beard - no waxing-no grooming. Just manly face hair. Grrrr!

Stephen K Wiliiams: Best tash? Take your pick, big Sam, McDermott and Souness. Cant count bad beards that's another list.  

Image source, Getty Images

Speaking of goals, tonight's other Champions League last 16 game sees group stage record goalscorers Borussia Dortmund travel to Benfica.

Dortmund tucked away a massive 21 goals during their progress from Group F (although, to be fair, 14 of those did come against one opponent - Legia Warsaw).  

In contrast, Portuguese side Benfica scored a more modest 10 as they finished runners up in Group B.

However, it is Benfica who currently top their respective domestic lead, with Dortmund fourth in the Bundesliga, a whopping 15 points behind leaders Bayern Munich. 

Image source, Getty Images

As usual, Barcelona's attacking trio are banging goals in left, right and centre.

Suarez has 25 in 32 appearances this season. Messi has netted 32 in 32 (he has only not scored in nine of those games). Neymar has a less impressive (by comparison) 10 in 28.

Even by his own high standards, Messi's 10 goals in five Champions League appearances this season is insane. 

Image source, Getty Images

There are both causes for optimism and concern for PSG tonight. 10 wins from 11 games is absolutely smashing but it has not been enough to lead Ligue 1, which is currently topped by the only side to take points off them in that run - Monaco. They were also unable to top their Champions League group - hence this tie - with Arsenal taking that honour (and being rewarded with a tie against Bayern Munich - damned if you do, damned if you don't). 

They have Edinson Cavani in the form of his life (33 goals in 31 matches) and a seemingly rejuvenated Julian Draxler to call on but not Thiago Motta, who is suspended. 

Image source, Getty Images

Mustaches - so hard to get right (Tom Selleck, Clark Gable, the Monopoly Man) and so easy to get wrong (pretty much every man in November). 

Neymar has gone eight and a half months early for Movember by growing what can only be described as upper-lip fluff ahead of tonight's game with PSG. And his efforts were greeted with much hilarity by his Barca team-mates., external

In honour of this why not get in touch with us to nominate your best and worst football facial hair, from George Best's burners to Alexi Lalas' ginger goatee.

You can contact us on twitter, using the hashtag #bbcfootball, or via text (on 81111 UK only).

Niall: A date with Messi, Suarez and Neymar. Happy Valentines Day to me.

Check Giggsy out in his fancy Uefa blazer.

Veteran defender Luisao makes his 500th appearance for Benfica on his 36th birthday. Former Fulham striker Konstantinos Mitroglou leads the attack for the Portuguese side.

Marcel Schmelzer and Lukasz Piszczek have both been passed fit and start for Borussia Dortmund after missing the Bundesliga loss to Darmstadt at the weekend.

Benfica XI: Ederson, Nélson Semedo, Luisao, Lindelof, Eliseu, Fejsa, Pizzi, Salvio, Carrillo, Rafa  Mitroglou. Subs: Julio César, Jardel, Andre Almeida, Samaris, Filipe Augusto, Cervi, Raul 

Borussia Dortmund XI: Burki, Bartra, Dembele, Reus, Guerreiro, Aubameyang, Sokratis, Piszczek, Schmelzer, Weigl, Durm. Subs: Weidenfeller, Schürrle, Pulisic, Kagawa, Castro, Ginter, Passlack.

Image source, Getty Images

PSG need little reminding of the size of tonight's challenge, or where the danger comes from in this Barcelona side.

Two seasons ago, they faced Barca in the quarters and were brushed aside with ease. Luis Suarez scored twice after Neymar's opener as the Spanish side won 3-1 in Paris before the Brazilian's brace at the Nou Camp completed the job.

The two Barca forwards will again line up in Paris this evening, along with a third attacking player. Some fella called Messi. He's pretty useful as well.

Image source, Getty Images

Since hitting the financial jackpot six years ago, PSG have scooped nine pieces of silverware, all of them domestic, though. They have four French league titles on the bounce but the furthest they have gone in the Champions League in this time is the quarter-finals.

Last season, there were suggestions they had finally cracked it after putting Chelsea to the sword in the last 16. But another of Europe's mega-rich big-dreamers, Manchester City, soon put a stop to such thoughts in the next round.

If they can get past Barcelona this year, optimism will reach unprecedented heights. Big if.