You can save the game when there is text on the screen. i.e., instead of reading it quickly and passing through it, stop and save (menu options appears in lower right hand side in text window, similar to other Drunk Robot games). In practice, this means that you save immediately AFTER the Simon Says game (and before the juicy parts).
There are eight truth options unlocked/implemented in latest version, across all four girls (total, not 8 each). You need to raise their Hotness (horniness?) and Shame sufficiently for them to answer those truth questions, otherwise, they bow out. Each of these truths presents a sexy scene.
If your memory is not up to the task to win the game regularly, cheat. i.e., write down the order of colors in some way so that you don't have to depend on your memory. I've only seen one of the girls surpass 4500 points once, and even 2100 will win over 50% of the time. Yes, you can end up watching one of the girls give a dare to another, but if you're playing well, this should not be common. (yes, they spank each other)