Sorry but you saying you're straight doesn't make you straight. Any more than saying you're intelligent would get you into Mensa.
Actually, you're wrong.
The amount of intelligence one possesses is a metaphysical trait - it is beyond our control and unchangeable by a significant factor in any way.
Your realising and acting upon your sexual orientation is a man-made choice - every man made action is an act of choice.
'The metaphysically given is, was, will be and had to be. Nothing man-made had to be'