Hold Me Tight by Bts, Let Me Know by BTS, I Need U by BTS, Rain by BTS, What Am I To You by Rap Monster, Lost Stars cover by Jungkook
Last Hope by Paramore, Now by Paramore

Uhhh, sorry if you don't like it...

Fix you by coldplay might help

The Script-Hall Of Fame

Try out these artists: Marina and the Diamonds, Tori Kelly, and Sara Bareilles. I've got a whole playlist on Youtube of slow songs you can listen to here: https://www.youtube.com/playlist?list=PLH91gRAQ4AnqKOAuJsSrhc3e4aWcfr8zk

And I know you said western music but I highly recommend Tablo if you haven't heard him already. He's lyrics are pure gold and I actually cried when I first listened to one of his songs without even knowing the meaning. Try listening to some with english subtitles. I recommend Home, Bad, Tide, and pretty much everything else from his Fever's End album. Seriously. He is so amazing.

set me free- taeyeon snsd

John Mayer - stop this train

Christina perri - human, jar of hearts, a thousand years
Rihanna - run this town, love the way you lie, monsters
Wiz Khalifa - see you again
Fifth Harmony - Worth it
Boys like girls - the great escape (huge recommendation)
Birdy - Skinny Love
Adele - Turning Tables
Maroon 5 - Maps, Animals
Veridia - We are the brave
Charli XCX - Boom Clap
Selena Gomez - Slow down
Beyonce - I was here
Diddy - Coming home

Jessie J - Price Tag
Destiny's Child - Survivor
Cascada - Every time we touch
Vengaboys - We like to party
T.I - Live your life
Keri Hilson - Pretty Girl Rock

Avril's Keep holding on, One Direction's Drag me down, Paramore's The Only Exception are suitable with the mood you are feeling i guess