Once every year my family in-law goes on a vacation together. Her parents, uncles, aunts and all the children together in one big vacation home. It's always a really fun week, the only problem is it's really impossible to have sex in a house with so many people. So as we got further into the week we both started to get really horny, especially the Thursday when we went with the whole family to an indoor pool.
I was waiting outside of the changing-rooms for my girl so we could go into the pool. She came out and I saw she was wearing a new bikini. It was red with a white pattern on it and it was tight, really showing off all her curves. She looked around trying to see where I was. When she saw me she smiled and walked towards me. She stood on her toes so her mouth was next to my ear, she whispered "I see you like my new bikini". At that moment I realised my dick had started to become hard the moment she came out of the changing-room. I turned around and quickly went into the water before I got completely hard, for everybody to see through my swim shorts. She kept standing on the edge of the pool, having fun about my reaction. She walked past me to the other end of the pool, making sure I could see her ass swing all the way before jumping into the water. I swum towards her but just before I reached her nephews came out of the changing-room and jumped into the water next to us. The rest of the family followed short after. The whole pool time we didn't get a change to do anything other than a bit of flirting and a quick touch now and again.