IF I KNEW THEN (What I Know Now) By Backstreet Boys

[samuelflower]

The scene at the beginning where the Boys are playing cards is from the Unbreakable tour in London. The show was filmed at the O2 arena in London in 2007 I think? Just search for BSB Unbreakable tour and the song is Show Me The Meaning of Being Lonely. It was an awesome concert!

[hr412]

I love BSB!

[rijayz]

original song by Claude Kelly...but bsb rocked it

[Maaribeel96Cqk]

Owww esaaa caancioon♥ laa amoooh! mil gracias por el videeoo :P

[mafer2194]

Me encanta esta cancion :)

y como la cantaron en vivo, son demasiado buenos *-*

gracias a ellos tuvre una buena infancia

[DemonicDuelist1]

why are there only 4 thought there was 5

[marthekao20]

@DemonicDuelist1 kevin quit because he wanted to be with his family...

[DemonicDuelist1]

whya re there only 4 thought there was 5

[mikeatEMEco]

what happened to the other backstreet boys? more like backstreet boy.

[gtzbigman1]

how did u make this video?

[krisco231]

holy crap i love them!!!!! i cant believe they r back!

[gleadhill79]

BRILLIANCE!!! TAKE NOTES PLEASE!!!!!

[GraceSofiaGomez]

love the editing and i absolutely love this song!

[honey5915]

what concert is the one in the beginning???=S wehere they are playing cards an stuff

[phoenixmoon3]

awesome editing!

[XxKaosChickXx]

@phoenixmoon3 thank you so much.

[ReturnofSaturn1021]

Great Video, KTBSPA!

[thunderoulis9]

Bsb for evah!!!

[honey5915]

amazing.brought tears in the eyes

[mikmarilynmusika]

love what you did to the video., <333

this is my fav in the new album along with This Is Us.

love you guys.,

KTBSPA!

[xanato1]

love this

[xMsramax]

i loove this story!!!!!!!

how come thr no music video to it?? :(

[gersy2world]

one of my forever favorite songs .. & one of the best songs in bsb history eveeeeeeeeeer

[CPrincessC]

This is my favorite song off the new album. Guys sound amazing and look fantastic as usual. Keeping the Backstreet Pride Alive! go backstreet.

[dxdesirayann]

Awesome video! Love the clips, the song, everything!! :)

[thebackstreetfan]

this is the next single as howie told us

[chicemj]

for real??..cool.

[mikmarilynmusika]

@thebackstreetfan

i envy you for being able to talk to the guys.,

KTBSPA

greetings from the Philippines

[chrisladturbo]

request this on galaxy radio (uk) as it is on there playlist!!!

[korokok0503]

..for 14 years I've loved these guys for their great talents.. I love you BSB

[chrisladturbo]

outstanding video well done!!! love this song also, hope they release it.

[jadedjc6981]

This song, this is us, masquerade and of course undone are constantly being played on my Ipod

[XxKaosChickXx]

its on their new album "this is us"

[4BackstreetBoys]

this would be the next video

[VIDSBYME78]

Great job on this video!

[TheKhaosGirl]

Love this song!!! AJ is the sexiest man in the world!!!!!I I love his voice!!!

[VIDSBYME78]

Great video best song on the album!

[FG81007]

dis song is da shit

[janee7791]

What does that mean? English please.

[lakamoura121]

Yu gotta Luv Thiz Song ! B.S.B that's what z Up !

[Daira55]

Waooooooo....i love this song....love BSB...I'm crazy for BSB...I want the new album right now....lol.....KBTBPA!

[JaikeKun]

what i know now! what i know now yeah i d treat u the best if i would know now :3 dang nice

[supu98]

luv it

[4everincomplete]

I wish that all of the songs (leaked or not) were going to be on the new album. All of them are AMAZING!!!!!!!

[SuperDepplover]

gud luck to u my boys!!!!many kisses from sri lankan songs!!!!!love the song!!!!!cannot wait till the new album release!!!!!oh..but i really miss Kevin!!!!!!!

[AlexSullivan1513]

wow Lil Wayne????or BSB???

[GERWhisky]

its bsb

i cant hear a lil wayne in it.

[prateekgoswami]

bst evr