
If you persist you should be able to take these two space-beings down in a few tries at most.

If you're on an unlucky streak and keep getting bad match-ups, you should consider using each girl's 3rd item slot for an item that can compensate for bad matchups by increasing the type of affection that is generated. While a bad match-up is not ideal, it shouldn't completely ruin your chances. Whenever she's low on stamina, try and get a stamina match, or swap to the other girl until you can prepare a stamina match. If you do get a bad matchup you should try to maximize one of the girl's affection meters first, and only perform big matches of whatever affection type they share on that girl. If you keep at it, you'll finally get to see the light at the end of the tunnel. These double dates seem to be randomized, so it's very easy to get caught between two girls with the same favored affection type. The thing to watch out for is bad match-ups. With a maxed-out style level, you should be seeing power orbs quite frequently (orbs with more than one icon in them.) You need to utilize these on girls with favorable affection types, as a good power orb match can fill a third of the affection meter, even on higher difficulties, as long as you've also maxed out your passion meter. You should make sure to use any time-extension items before you finish a round because they're tied to the girls you assigned them to.

Remember to keep getting extra move matches as often as possible, because your total doesn't get increased between rounds. Make sure you're optimizing your combos by selecting the girl who likes the affection-type the most.

When it comes down to taking on these two cosmic horrors, there's not too much that's different from a regular date.
