Intimidated

I am intimidated:
By his formidable intellect,
By the curves of her body and the twin depressions on her back.

I am intimidated:
By his success and self-assurance,
By the eloquence of her words and the popularity of her prose.

I am intimidated:
By his soft musical hands,
By her long, glossy hair and her slim, swaying hips.

I am intimidated:
By the way that he touches her,
By the way she responds and how their bodies entwine.

I am wondering:
What I'm so scared of
And why I haven't tried...