Really wierd dream about sleeping with my cousin

Last night I had a really wierd dream about my cousin touching me. It was a really short dream we were outside in a big garden laughing an running about, flirting and he touched me below from the back and I woke up wet and my heart was beating really fast. I felt really stange and feel like im sick in the head but all day iv been thinking about my dream and what if it was to happen, I dont particularly want it to happen but I will admit he is good looking and I am attracted to him but Iv never actually thought about that before. What am I supposed to think :/