Q&A: Lovestruck

Who's Up Party Games (§148)
It is buyable via the catalogue (Activities and Skills > Recreation), phone (Shopping > Purchase Romantic Items...) and from Mixologists at venues (Purchase Social Items...). Up to 6 sims can play at once. It can be placed on the terrain, floor or any surface and sims will sit down nearby when playing. This is a portable game box.

SFW/Family game (Thumbs-Up!)
Visually - This game is a "guess the emoji" game where sims will hold a card to their foreheads facing outwards and try to guess the emoji on the card via several animations. They get thumbs up thought bubbles from other players when they guess right.
Functionally - You can learn Traits and Skills of one or more of the sims playing, possibly other SFW info too. It seems to be random which sim(s) you find out info on.

NSFW/Adult game (Woo-Who!?)
Visually - This game is a "never have I ever" or maybe "truth or dare" type game where one sim seems to ask a risqué question about food, clothes or various other subjects and the other players respond with themed thought bubbles.
Functionally - You can learn TOTOs of one or more of the sims playing, possibly other NSFW info too. It seems to be random which sim(s) you find out info on.

Romantic Blankets (§250)
They're buyable via the catalogue (Activities and Skills > Outdoor Activities), phone (Shopping > Purchase Romantic Items...) and from Mixologists at venues (Purchase Social Items...).
Visually - There are 3 variants (Classic - plain, Patterned, Fireplace Ready - bear), each with several swatches.
Functionally - This is a portable blanket that allows sims to WooHoo anywhere. It seats 2 sims, cross-legged, lounging or kneeling to eat [foods and cost - Garden Salad (§20),Grilled Cheese (§20), BLT(§40), Pambazo (§40), Flirty Heart Cookies (§50)].

It's options are:

Sit (alone)
Sit... (sim picker for company)
Put in Inventory
Watch Sky with...
Set Up Picnic... (pick food and then, optionally, a sim to eat with)

Sim(s) will route to the blanket, kneel/lounge and do the selected interaction. There are also cuddling, make out and woohoo interactions available if sat with romantic interest/partner.


Other Gameplay Objects (catalogue)

Costume Trunk (portable, change played and NPCs into any outfit category, use as standard dresser)
Venue Closet (Woohoo spot)
Heart Bed (vibration voice effects and unique moodlets)
Food Stalls

There is also an animated wall fan that may or may not be functional with Seasons. It doesn't have any interactions to turn it on or off like the ceiling fans do, so I doubt it.


Other Gameplay Objects (debug/world/live edit)

Chocolates/Candies/Treats (giftable/shareable)
Flower Bouquets (giftable/décor)
Fountain (various wishes, steal coins, sit & nap)
Wall of Love (write names in chalk)
Woohoo Motel (sleep/woohoo, room costs small fee)
Flowers & Gifts Kiosk (shop)
Axolotl Collectibles (view, breed, release to habitat) & Spawner
Interactive Sculptures (lore)
Bus Stops (travel option when clicked)
Quest Ring (ring box can give Confident buff, CAS wearable on quest completion, sellable for §5,000)

Be advised that most of the gameplay in this pack is via the new systems, new interactions etc, similar to Growing Together.