do they avoid eye contact
do they hurriedly find excuses not to talk to you
is everything a single word answer
do they scowl often in conversation
this is a sign that the female in question is in love with you and its time for them to show them your nerdier side. bring up pokemon cards or your katana collection to impress her.
if all else fails show her how many pushups you can do even if its only 8. she is afterall a member of the inferior sex, and lacks the upper body strength to do pushups at all.
also chew with your mouth open to establish dominance.
