The former LA gang member revealed in this week's Confessions challenge that he had inappropriate thoughts about Deana Uppal, Sara McLean and Lauren Carre during his stint on the show.
"I have lusted over housemates, talked in a more sexual way than I should have," said Adam.
Scott Mason also confessed to having sexual thoughts about a housemate - Luke Scrase - mentioning a dream he had about the club promoter.
"It's not recurring, it will never recur, it was just the devil," he joked.
Meanwhile, Luke Anderson confessed to being envious of Luke Scrase, Arron Lowe and Benedict Garrett's physiques and Adam's penis size.
Big Brother continues daily on Channel 5.
Day 54 in Big Brother - Photo gallery: