The "Stay With Me" singer fell victim to gay bullying after coming out to at age 11.
"A bunch of boys from a rival school would shout insults at me as I walked from my home to the train station," he told The Sun. "I remember walking to the station getting 'f----t' shouted at me all the time. It was the most mortifying thing. Not so much for me. I knew these people were stupid, uneducated twats."
But the verbal attacks turned physical for the four-time Grammy award winner who recalled a time that he was attacked because "it was pretty clear I was gay."
"When I moved to London I got punched in the neck walking back from work. It was definitely homophobic," he said. "I was on the phone speaking quite loudly and had pink headphones on, so it was pretty clear I was gay."
And it didn't stop there, Sam remembered that his "whole world just crashed" when he felt the bullying coming from other gay men.
"When I was 17 I decided to go gay clubbing in Soho in London. I remember walking in and this gay guy turned to his mate and said something really nasty about me," Sam said. "My whole world just crashed and I had a really lonely feeling. I knew then it was going to take a lot longer to be accepted. There’s a lot of homophobia and bullying in the gay community. There’s also a lot of body dysmorphia in the gay community, which means if you’re not toned and skinny it can be awful."
Sam's own stories will no doubt help teens in similar situations, and so will his music. The singer just released a duet with John Legend of his In the Lonely Hour hit "Lay Me Down" for an upcoming Comic Relief special. The proceeds will go many different projects including the young LGBT community.