I think too many young guys get caught up with "not blowing it" with one particular woman that they over think the situation and destroy their own chances. Have you ever seen the alpha male jerks with their buckets of self confidence? I'm sure you have. Do you know why they have so much confidence when dealing with women? Its because they don't care about their chances with [one] woman who they don't even know yet. If you approach this situation thinking "if she likes me, great, if not f*ck it.... I'll just enjoy my workout session" then you might be able to tame your nerves a bit.