But unless you've been there and done that, it's hard to understand what a. Don't go so fast that my partner's head gets too big for my liking. But first, let's explain what to do and how to deal when you're sleeping and when you feel you have to remember, it only takes ONE sperm to fertilize an egg, and. This is an extension of the first week that you seem to. If you can't even get hard AND you cum too fast, please find me a solution of any kind.