So you lead the Kevin Federline wannabe out behind the dumpster, and allow him to make passionate love to you until he is exhausted from the effort. He's spent, and now the girl is yours!
This is how every date goes if you are a gamma male stag beetle. The alphas, with their big, scary pincers, protect the females and fight for the right to mate. The less masculine gamma beetles don't have a chance, so they use pheromones to convince the alphas that they're ladies. Then they seduce them.
The whole point of seducing the male is to get his "little soldiers" out of the fray.
After the alpha male wastes his sperm on the transvestite beetle, he is uninterested in other females. With no sperm to compete with his and the alpha male passed out in post-sodomy afterglow, the gamma sneaks over to the female and has his way with her, knocking her up.
Totally worth it.