it usually is body language, yes.
i hesitate to say "afraid", but lots of girls were uneasy around me when i was around 13 to 15...for good reason. i was far too touchy back ten, i wouldn't speak in full sentences and sneaking up behind people (males alike) would make me exited. needless to say, i've grown out of that now...
so i think they were right to be uneasy, and i hope you don't do any of those things. but i don't think that's the case.
girls are indifferent to me nowadays. oddly enough the two i know who have ever been attracted to me are bisexual.
are you aware of what facial expressions you tend to make when approaching females?
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