What is the theme for Lullabies - All Time Low?

Well the song itself, is about suicide. But its more like a cautionary tale. Like beware of what you do, because you dont know what will happen. The first line "Make it a sweet sweet goodbye..." is saying like if youre mad and then they die how do you feel, so dont. The candle burns out, is like his time is up, he's not coming back. Keeping going, Alex is saying, Youre dead, but i'll see you in my dreams, becaus eyoure a part of me, and you dont realize how long forever is until you experience it first hand. The general theme is essentially he misses his brother