At first we thought he might be a lesbian and was afraid to come out, but he wouldn't tell us.
He confided to his sister first and a year later he told us he was transgender", Aslan's mother Beatriz Moya says.
The bill would allow people to change their gender on identification documents without the need for psychological or other medical appraisals from the age of 14.
Anyone aged 14 to 16 would need the agreement of their parents or guardians to change their gender.
No scientific evidence has emerged that proves that self-identification laws lead to a higher rate of people seeking medical treatment to alter their bodies.