'It's tough, because there is this pressure that everyone has and is putting on each other, and something that is so true and I don't think is talked about enough is that the human condition is messy.' 'Three years later, I actually listen back to it and it makes me think of every single person who has Instagram or Twitter and every single person who is checking their Instagram every five minutes to see if people approve of the last thing they posted,' he explained. Mendes wrote 'Monster' three years ago when he was 'feeling a lot pressure who I was in a relationship with and wanting to push me into this box.'