Living her truth. During a new episode of Teen Mom OG, Amber Portwood revealed to producers that while writing her second memoir, she decided to be honest about an important aspect of her life — her sexuality.“People are going to be a bit shocked that I am bisexual,” Amber, 31, explained on Tuesday, October 12. “That I have had a relationship with a woman for 8 months before.”Amber, who has plans to explore some “real s–t” in her upcoming book, shared that she was 20 years old when she dated a woman, which made her realize she identifies as bisexual.“I’m really scared right now,” the reality star said, adding that ex Gary Shirley is aware of her sexuality but that she doesn’t think he is “very open” to it.“I think he’s going to think it’s