Zayn shows up mid-morning on a Tuesday in a tank top and bikini bottoms, a snapback shoved on backwards over hair that looks like she just rolled out of bed. When Niall answers the door, Zayn hikes her bag higher on her shoulder, says, "I brought popsicles," and, "I hope you inflated the pool already."
Niall was woken by Zayn pressing the doorbell so she hasn't actually, and she tells Zayn that. Zayn just huffs in response and says, "Well these are probably melted anyway. Do you still keep your air pump in the garage?" before pushing past Niall into the house and dropping her bag in the hall.
Niall pulls the popsicles out of Zayn's bag and peeks inside the box; they're still mostly solid, so Niall puts the box in the freezer and then goes to her room to change into her bikini. When she comes back to the kitchen, Zayn is sitting at the table, a dirty air compressor in front of her and the pool a heap of plastic and vinyl on the floor by her feet.
Zayn's got a smudge of dust streaked on the inside of her wrist and another up the side of her right thigh. Niall doesn't think before she licks her thumb and wipes at the spot on Zayn's leg. She stills when Zayn wraps a hand around on her wrist, but she glances up through her eyelashes and Zayn is smiling and then leaning in to kiss Niall right at the corner of her mouth.
Niall grins and turns her mouth into the kiss for just a second, and then she pulls back, says, "We should get this set up before it gets too hot," into the curve of Zayn's cheek.
Zayn rubs her nose across Niall's neck before she moves away and nods. Niall sees Zayn swallow, and then Zayn is slowly releasing her wrist and saying, "I think we already missed that window of opportunity."
It takes them longer than is probably reasonable to set up the pool. Niall insists on putting on sunscreen and grabbing a hat from her room before she'll even venture outside, and Zayn follows her into the bathroom and digs her fingers into Niall's hips when Niall asks Zayn for help getting her back.
The grass is scratchy against her thighs when she dumps the pool in the backyard and then drops down beside it. Zayn folds down next to her and tries to untangle the mess of tubes that is the air pump while Niall crawls around on her knees, smoothing the material of the pool until it lies flat.
Forty-five minutes later, the pool is standing on its own and Zayn and Niall are leaning back on their elbows and watching it fill the rest of the way with air. It's finished after another twenty minutes and Niall can feel Zayn's eyes on her when she bends over to hook up the filter.
Niall calls back, "Make yourself useful and pull the hose around so we can get some water in this thing."
Zayn touches a hand to the base of Niall's spine when she passes and then she's coming back around the side of the house with the water already running. They wrap the hose around the ladder to keep it from falling when the hook it over the edge of the pool, and Zayn shrieks when Niall accidentally sprays her.
Niall laughs and swats at Zayn's leg ineffectually, says, "Let's go inside and find you a towel."
It's at least ten degrees cooler in Niall's house and she lifts her hair off her neck as the screen door slams closed behind her, makes a noise when the air hits her skin. When they step into the kitchen, Niall goes to the drawer to dig for a dish towel and then Zayn crowds against her, bites gently into the curve of Niall's shoulder when she straightens up. Niall grabs Zayn's hand where it's gripping her hip and she rolls her head to the side when Zayn drags her teeth over the knobs at the top of Niall's spine.
Niall groans when Zayn steps away but she goes with it when Zayn uses the hand still holding Niall's hip to maneuver her until she's backed up against the lip of the sink.
Then Zayn is pressing into her again and their skin is slick and hot where it meets. With Zayn this close, Niall can smell her vanilla deodorant and the salt sweat that is gleaming in the hollow of her throat. Zayn doesn't hesitate before she leans in to kiss Niall and Niall licks into Zayn's mouth immediately.
Zayn's arms go around Niall's neck and her elbows lock behind Niall's head, keeping her close. Niall feels almost too warm, what with Zayn's stomach pressing wet against hers and the way Zayn's tongue is sweeping into her mouth. Niall's almost desperate with it and she doesn't think before she's fitting her hand around the spot where Zayn's ass and thigh meet and urging Zayn forward so their hips shift together.
Niall makes a noise and digs her nails into Zayn's leg when Zayn bites her lower lip and then strokes her tongue across it. Niall doesn't know how much time has passed but she's sweaty and hot all over when Zayn starts to slow the kiss, making it gentler and less urgent. Zayn presses a soft kiss to Niall's open mouth once, and then again just at the corner, before she's looking over Niall's shoulder and out the window, saying, "The pool's started to overflow."