"Trust My Lonely" is a song by Canadian singer and songwriter Alessia Cara, released as the second single from her second studio album, The Pains of Growing on October 5, 2018. It was produced by Pop & Oak and lyrically concerns moving on from a relationship. The song peaked at number 55 on the Canadian Hot 100.
"Trust My Lonely" is a pop track with elements of reggae featuring "plinking" synthesizers that lyrically concerns moving on from a relationship. iHeart Media wrote that the song "has lyrics that bounce between being hurt by a former partner and finding the strength to move on." Cara told Billboard that "When I initially wrote that song, I wrote it because of my insecurities. I think a lot of people, we become comfortable in our misery or comfortable in a relationship that may be bad for us. This song was just a reminder for me and for everyone to just trust yourself and let go of things don't serve you in a positive way, especially your heart and your soul." The song was written by Alessia Cara, Warren Felder, and Andrew Wansel. It was one of five songs on The Pains of Growing that was produced by the duo Pop & Oak, who had previously produced Cara's breakout hit, "Here.