I took the bag from Tristan dreading what I was going to find inside. Mom had announced that we were going to the beach for a family day out. I wasn't really in the mood for a family day trip anywhere, but when Mom decided something was happening it was not up for negotiation.
And, of course, a trip to the beach provided Tristan with the opportunity to buy me a new swimsuit. Last time he'd bought me a little red bikini that was 3 sizes too small. I was terrified of what he'd bought me this time, especially since our parents would see it.
I opened the bag and pulled out the contents. My eyes widened as I saw the tiny black bikini. The top was barely enough to cover my ample breasts, and the bottom was a thong that wouldn't leave much to the imagination. I could feel my cheeks flushing with embarrassment and anger as I looked up at Tristan.
"What the hell is this?" I hissed at him.
Tristan smirked at me, clearly enjoying my discomfort. "I thought you might like it. You know how much I love seeing you in revealing clothing."
"Yes, but Mom and Dad are going to see it as well," I reminded him.
"Well, you could always keep your clothes on if you prefer. And hey, it's not as small as last time," he said.
That was true. It wasn't as small as the red one had been, thank God. I shook my head and reminded myself that in just a few weeks our deal would be over and I would no longer have to do as he said. I'd be free.
I got changed into my new bikini and put on a pair of shorts and a tank top over the top before heading down to join my family as they loaded the car.
We'd been coming to the same beach since Tristan and I were little, so we knew the place well. There was a really secluded area just behind the caves that hardly anyone knew about. In all the years we'd been coming here we'd only seen 3 other people in the hidden beach area. Today when we arrived we found it as empty as usual.
"Okay then, let's get the grub!" Dad said, pulling out the blanket and unfolding it over the sand.
Mom and I started getting the food out of the bags and Tristan grabbed the drinks from the cooler. We sat down together and ate lunch, and as we laughed and joked as a family I forgot that I hadn't even wanted to come to the beach this morning.
"Right!" Dad said, standing up after we'd finished eating. "Time for a swim, I think."
"No, you can't swim after eating or you'll get a stitch," said Mom.
Dad pulled off his shirt and discarded it on the blanket. "Oh, no. A stitch. Imagine the horror," he said with a laugh.
"You won't be laughing when you do get a stitch, and you sink beneath the water, and a shark bites off your leg. And don't you dare come crying to me if that happens," Mom said, folding her arms haughtily.
I watched as Tristan followed suit, dropping his shirt to the sand and revealing his lean, muscular chest. I tried not to let my eyes linger too long on his defined abs and chiseled arms, but it was difficult. He noticed my gaze and smirked at me. It wasn't fair how attractive he was, and how much he knew it.
"Come on, sis," he said, gesturing for me to join them. "Don't be a party pooper."
I sighed, realizing there was no getting out of it. I took a deep breath and stood up, peeling off my shorts and tank top to reveal the little black bikini beneath. I held my breath and waited for the reactions from my parents.
"Erin!" Mom said when saw what I was wearing. "It looks like you left most of your bikini at home."
My face turned crimson and I wanted to cover myself again to avoid the embarrassment. Tristan smiled appreciatively, and I could feel his hungry eyes all over my body. "It's fashion, Mom," he said, saving me from having to think of a response.
"Fashion seems to have left all modesty in the past," said Dad, his eyes hovering over my breasts before hastily looking out towards the sea.
I refused to turn my back to them so they wouldn't see that I was wearing thong bottoms.
Mom decided to stay with the stuff having never really liked swimming in the sea. Tristan and Dad raced to the water and I trailed behind. With them in front Dad wouldn't see my bare backside.
We all waded out farther into the water, stopping when it came up above our waists. Tristan's abs were just visible underneath the water and my eyes lingered there for a moment too long as he turned and splashed me.
"Hey, look out," Dad said, splashing Tristan back for me.
Tristan laughed and ducked underwater before emerging again at Dad's side.
"I've got you now, old man," Tristan said as he grabbed Dad's leg and pulled him under the water.
"I beg--" Dad called out before he was submerged.
Dad burst into the air in a spray of water, gasping for breath as he tried to get the water out of his eyes. "You little shit," he said, laughing. He lunged for Tristan, but Tris darted out of the way, leaving me in the line of fire.
"No!" I squealed, as Dad collided with me, pulling me under the water in a big bear hug. I thrashed around under the water, trying to free myself and return to the surface. Dad got off me quickly and then his arms were around me, pulling me from under the water. I gasped for air as soon as I broke the surface, cradled in his arms.
"I wasn't going for you, Erin," he said as he laughed and gave me a small squeeze. That's when I noticed that one of his hands was on my ass, his fingers spanning an entire cheek. I looked up at my father's face but there was no sign that he'd even noticed where his hand was. I didn't dare move in case I made him aware.
"Yeah, yeah," Tristan said. "I thought it was hilarious."
Dad helped me back to my feet and just before he let go his hand gave my ass a little squeeze.
"Oh!" I said, looking at my Dad in surprise.
"What?" he asked, his face a perfect picture of innocent surprise.
