Many times a fragrance will smell differently on differently people. My skin tends to augment sweet scents so I will avoid fragrances like those (especially the CSP vanilla fruit scents). I used to wear Opium when I was younger and I NEVER was told I smelled like a man - far from it! It is spicy, but nothing I would associate with a 400 lb weight lifter!!!
Frankly, I believe a person should wear what they like and what works for them. I ignore perfume "gender assignments." I figure if my friend's toddler tells me I smell great then I can't be too far off course. Kids can be brutal. My favorites are the L'Artisan collection. Some are quite flowery and some are incense and wood based, but they smell great for a man or woman. Leather scents can be gender-neutral, as in Daim Blond by Serge Lutens. Tobacco scents, such as Tabac Blonde by Caron are great for men or women.
Teenage boys tend to like girls to wear the heavily sweet scents that are so popular today: Juicy Couture, Calgon body sprays, Jessica Simpson scents, and the like. I blame it on an undeveloped "sense of self" and self-consciousness. They are afraid to deviate from the norm and are overly conformist at that age.
Wear what you like - that is the best advice I could give someone.