My niece was provoking me so i don't care about the thirty years difference and gave her what she wanted

Last month we went on a beach vacation with my wife and son, and my wife insisted on taking her eighteen year old niece as well. when i saw him in a swimsuit, i got aroused and i had to put myself in the sea so that my wife not to realize. but the little bitch yes she realized and from that moment she started to talk to me. she was playing with the food in her mouth, with her tongue, she was wearing short clothes and leaned down so that i could see her ass, she was also looking for opportunities to be alone with me ... until one day my wife was shopping with my son while his niece was sleeping ... i walked into the room and fucked her all up, he was moving like a snake with my cock inside