In April, after consuming a full dose of LSD, Wilson had what he considered to be "a very religious experience" and claimed to have seen God. A week after his first LSD trip, he began suffering from auditory hallucinations and for the remainder of the year experienced considerable paranoia. In addition to worsening his mental state, Wilson's progressive drug habits exacerbated the strain on his recent marriage to 18-year-old singer Marilyn Rovell. He believed that LSD influenced the writing of "Pet Sounds" because it "brought out some of the insecurities in me, which I think went into the music." Wilson also attributed his greater sense of creative freedom to his use of marijuana.