Probably the most difficult achievement of HuniePop 2, you must complete a date with both girls having maxed out Passion (100%), Sentiment (40) and Stamina (6). In the various sections you will find the "must have" gifts that are at the base of the build, some other good gifts that will help you reaching this goal, the girls that you will need to date, an explation of how you will need to play and, finally, a video with the demonstration.

My strategy revolves around some specific objects:

• 2x Lube (all date gifts will cost 2 less Sentiment to give for both girls): the effects stacks, so all the gifts will cost 4 less Sentiment. They are amazing, because thanks to them you can save Sentiment to reach easily the 40 Sentiments goal, you can use gifts early in the game, and also - and this is the fundamental aspect here - you can use the Surfboard, the Affection's goal jewelry and the Glass Dolphin for free: this last feature will allow you to finish the game at any time, regardless of the remaining moves, once the minimum requirements for victory have been reached.
  
• 1x Glass Dolphin (the recipient will duplicate her Sentiment and give that amount to her date): thanks to this gift you can concentrate on building Sentiment only with one of the girl: once you reach 40 with her, the Glass Dolphin will duplicate that value.
  
• 1x Citrine Bracelet, Emerald Bracelet, Ruby Ring or Sapphire Ring (+1% of the total Affection Goal for every <type_of_token> token on the grid): thanks to this gift, you can finish the date without using Stamina at the end. Always use one the jewelry that DOESN'T match the favorite types of tokens of the girls, because you will need to "accumulate" them on the board to make the jewelry useful, and you will need their favorite tokens match to reach the goal score.
  
• 1x Surfboard (+3 Stamina to both girls, unless the recipient’s date is exhausted or upset): thanks to this gift, you can easily reach the goal of 6 Stamina for both girls at the end - remember that you need to have at leat 3 of Stamina before using it.

Use whatever you want or prefer for the other gifts. I used:

• 1x Eyelash Kit (+3 Sentiment to the recipient for every move on her that includes a 4-of-a-kind+ match): 40 of Sentiment, even is only for one of the girl, is a lot. Thanks to this you can build Sentiment more easily.
  
• 1x Yellow Narcissus (consumes all Joy tokens on the grid, earning +1 Move for every token after the first 2): extra moves are ALWAYS useful, and thanks to this you can also trigger some good chains.
  
• 1x Topaz Earrings (+1 Move for every 2 Joy tokens on the grid): use it always BEFORE the Yellow Narcissus. X-D Extra moves are always usueful, and this is wonderful because the Joy token will not go away, so you can get other extra moves by matching them.

If you have problems to build Passion, use Tropical Sunset instead of the Narcissus or the Earrings, but usually it's not a problem, and extra moves imho is better.

The girls:

• Zoey with Aquaphobic (the effects of sentiment and broken heart tokens are reversed): Aquaphobic is simply amazing. You will need to build Sentiment only with the other girl, so Zoey needs only little Sentiment to use her gifts and, thanks to Aquaphobic, you can match broken heart tokens without any worries and remove them from the board.
  
• Polly with Drama Queen (if Polly becomes upset, she'll drain 4 sentiment from both her and her date): in the video I used Sarah with Annoying as F*ck (there's a 15% chance Sarah will leave behind broken heart tokens when a match is directed towards her) because I find her when I tried to get the achievement, but Polly is better, because the baggage Drama Queen is basically ininfluent (just don't upset her X-D).

Sarah with Annoying as F*ck, as explained up there, is another good choice, like you can see in the video. I would avoid Lillian, because her baggages are problematic for this achievement, and preferably also Lola, because her favorite token is Talent like Zoey: it's better to have two girls with different favorite tokens because you will build your score easily (and both of them must reach 100% Passion, so you will get a lot of points from both). If you want to use Lola, I suggest the baggage Miss Independent.

My optimal build:

• ZOEY - Baggage: Aquaphobic - Gifts: Lube, Yellow Narcissus, Topaz Earrings, Surfboard
  
• POLLY - Baggage: Drama Queen - Gifts: Lube, Glass Dolphin, Eyelash Kit, Citrine Bracelet

In the video I have Sarah because I found her at the moment, but the build is the same - with Sarah is only slightly more difficult.

Before the date, thanks to food try to reach 30 Moves available and try to give +3 of Sentiment to at least one of the girl, so you can use Lube on turn 1. Always give at least one Lube BEFORE using any of other gifts. Use Eyelash Kit, if you have, as soon as possible, and try to ignore Joy tokens in the first turns to maximize the effects of the Yellow Narcissus and Topaz Earrings (if you have them).
Build Sentiment ONLY with Zoey, and Passion with both. Always remember to NEVER match Sentiment tokens with Zoey if you have Aquaphobic (and you want it), and that you can remove dangerous broken hearts tokens without any worries thanks to her. Never understimate the score, you will probably need to reach nearly 90% of the goal score before winning with the Affection goal's jewelry.
When you have reached 40 of Sentiment with Zoey's partner, and 100% of Passion with both, pay attention to the score: you need to be really close to the goal score to win the date with the gifts, and you need to have at least 3 of Stamina with both. If you want to win without the final jewelry, remember that you need to use the Glass Dolphin before the last move, that the final match must include some Stamina tokens (you need to finish the date at 6 Stamina for both girls), and that the other girl need to be at least at 5 of Stamina (you can eventually use the Surfboard for this). Otherwise, like you can see in the video, when all the conditions are met (40 of Sentiment for Zoey's partner, 100% passion and at least 3 of Stamina for both girls, and a score and a board's layout sufficient to make you win with the Affection goal's jewelry), use the Glass Dolphin and the Surfboard to reach 40 of Sentiment and 6 of Stamina for both the girls, and win the date with the jewelry.

I recorded the game where I got the achivement: I have Sarah instead of Polly, but it's basically the same. I got it on my second try (on the first one I was very unlucky with Sentiment, I reached all the needed values apart from Sentiment with 1 move left - I had 39 of Sentiment... 39... =_= ).