Never figured out why my two nephews turned out homo. Yes my sister is a raving moonbat and BIL was a lush that hung out in bars late after work, but the kids were not abused AFAIK.
Any number of possibilities.
Look at the whole Emo thing that started back in the 80s. By 2000 it was common for kids in that subculture to be bisexual just to be ‘cool’.