I found a prompt generator and it's awesome.
NSFW Warning.

1 = Zodiac and Matt go on a camping trip. Zodiac forgets to bring a sleeping bag, so they have to squeeze into Matt's sleeping bag with them.

2 = NSFW // Matt playfully keeping Zodiac pinned down as they take Zodiac from behind. Matt lays their hands over Zodiac's as they kiss and bite Zodiac's neck and shoulder, whispering naughty/sweet things into their ear. Bonus: They're doing it in front of a mirror. Matt takes pleasure from the look on Zodiac's face as Zodiac whimpers beneath them.

3 = Matt and Zodiac go to a fair/amusement park and Matt wants to go on the roller coaster and Zodiac agrees. Later, Zodiac regrets their decision and ends up clinging onto Matt for dear life.

4 = Zodiac draws pictures of them and their crush Matt. One day, while at Zodiac's house, Matt sees the drawings.

5 = NSFW // Zodiac is a virgin and Matt practically worships their body the first time they have sex, giving every part of them attention in order to make it enjoyable for Zodiac.

6 = Matt and Zodiac having a tickle fight until they're breathless.

7 = Matt calming Zodiac down when they have a bad dream.

8 = Matt buying Zodiac a special treat when they go out shopping.

9 = NSFW // There's an awfully hot day and Zodiac is moody because of it, so Matt prepares some ice tea, and puts an ice cube in Zodiac's shirt as a joke, but then Zodiac starts making all these noises that Matt finds sensual and Matt gets horny.

10 = Zodiac has a bunch of online friends and Matt is jealous.

11 = NSFW // Zodiac and Matt going back to one or the other's house after a date, where they eventually end up dry-humping on the couch. Matt only intends this as foreplay, but Zodiac is already getting overwhelmed. Matt finds this amusing and endearing, leaning close to whisper something teasingly into Zodiac's ear. It turns out that Zodiac is more excited than Matt thought, and hits orgasm without any further stimulation, to the surprise of Matt and the embarrassment of Zodiac. What happens next?

12 = NSFW // Imagine Matt fucking Zodiac from behind. At first it's doggie style, but then Matt pulls Zodiac onto their lap and carries them to the other side of the bed where a large mirror is. They continue fucking Zodiac, kissing their neck, and ordering them to open their eyes. Bonus if Zodiac orgasms at the sight.

13 = NSFW // Matt and Zodiac waking up in the morning after a night of hot lovemaking. Matt has only their pants on and is trying to find their shirt around all the clutter of clothes taken off from the night before. When Matt proceeds to ask Zodiac if they've seen their shirt, Zodiac comes right in, wearing Matt's shirt. Cue a flustered Matt who can't stop thinking how cute Zodiac is in their clothes and lets them keep the shirt for the rest of the day.

14 = Good for Opposite Day - NSFW // Zodiac and Matt having rough sex. Matt fucks Zodiac hard and fast, keeping a bruising grip on their hips. Matt bites down on Zodiac's shoulder as they come, and Zodiac leaves deep scratches over Matt's back.

15 =  Zodiac using Matt's lap as a pillow.

16 = Matt holding a sobbing Zodiac. Zodiac cries themselves to sleep with their face buried into Matt.

17 = Matt catches a cold so Zodiac makes them breakfast in bed.

18 = NSFW // Matt waking up in the middle of the night horny, and they beg Zodiac to have sex. However, Zodiac is too tired, and instead tells Matt they'll have sex in the morning. Now, imagine Zodiac waking up to Matt being on top of them and saying, 'Now?'

Favorite Prompt:
Zodiac: FIGHT ME
Matt: Unfortunately, I have a rule against battling children.

Sorry- I just wanted to use these prompts some time. I mean like- For my Zodatt oneshot book but not the smut ones of course!-