Grasshopper, let me tell you about the birds and the bees...
"Sexual capital is the social value an individual or group accrues, as a result of their sexual attractiveness. As with other forms of capital, sexual capital is convertible, and may be useful in acquiring other forms of capital, including social capital and economic capital."
She has sexual capital, you have economic capital, two of you going there is social capital.
Her sexual capital gets her your economic burn-out in a social event.
Your economic capital gets you her companionship in a social event.
The dude social event was fired by her sexual charm and your economic thing.