So there came an artical out, about that the 'Now' mv and Rihanna's 'We found love' mv.

There was a comment:

They both used Bonnie & Clyde

(cr to @amazingb2uty)

[TROUBLE MAKER MV MEANING]
So basically, the music video is related to the musical "Bonnie and Clyde" which is a couple that has been a 'criminal couple' and has been killed at the United States in the year 1976. As you can see in the beginning, Hyunseung slept with two girls and Hyuna is at a club. These two are not together because they are trying to forget about each other. But as you see,Hyunseung kicks the two girls out, and Hyuna pushes the guy away from the club. These two still love each other. When Hyuna can't take it, she goes to Hyunseung and these two spend their last night before death. Them two doing fireworks, kissing, setting walls on fire, all becomes a memory the couple shares. Nearly the end of the MV, two cars circle around Hyuna and Hyunseung. These two cars are police cars and they symbolize the couple's upcoming death that day. 
Although the music video didn't show their death,just like Bonnie and Clyde,Hyunseung and Hyuna,who were a criminal couple, get shot and killed. 
The whole music video portrays a sad romance between a couple that has no other way to love, than death.

I guess this will help you guys more?^^