Wife Niece

My wife niece has always been a flirt with ever since she went away to college. In the past she has “accidentally” rubbed her ass on my dick while trying walk by and i other cases she has lifted her skirt and flashed me her thong. I have told my wife about this and she just says “nah she just has a little crush on you is all it’s harmless”. Well this past thanksgiving it escalated a bit. At her moms place my wife and I brought our swim suits to go in the hot tub. I went and got changed and got in first as my wife was chatting to everyone. So I got in with a nice cold beer and it was so nice. I hear the door open and close and I say “are you ready babe” because I thought it was my wife but instead it was her niece. So now I’m nervous as hell. She’s 21 a smoke show and kinda drunk. She gets in we make small talk whatever and sure enough she starts rubbing my dick with her foot. I tell her to stop and she just giggles. She keeps going and I move away as far as I can without getting out and she just moves closer. I ask her what do you want from me? I’m married to your aunt and your making this super awkward! With no hesitation at all she leans into me and says “I’ve always wanted to suck your cock” I said well you can’t sorry. She got up turned around pulled her bottoms down and spread her cheeks in my face. But I was starting to cave. I rubbed her pussy and asshole and it felt so nice. My cock was rock hard and when she felt it again she started stroking and it and I couldn’t resist. I looked her dead in the eyes and told her to suck my cock and she went right for it. It was great better than my wife for sure and when it was time I stood up and blow my load on her tits. I sat back down like nothing happened and my wife came out about 10 minutes after I nutted. We all sat in the hot tub with my jizz floating around.