The 18th Birthday Pt.3

As soon as we get through the door Izzy has jumped up at my chest and I almost fail to catch her. I carry her into our living room area and sit down on one of the couches, Mila sitting next to me with one of her arms around my shoulder.
A few moments later mom comes out and looks at us with a weird look in her eye.
"Di... did you two have fun out there?" she says with a bit of a stutter. Before I can reply Mila has already spoken up.
"Indeed we did mother." She stands up and walks over to mom, standing a good foot taller then her. "And judging my the smell wafting off you, so did you. Did you enjoy peeking in on us mother?" She says with a smirk. Mother's face turns red from the blush as she backs away, right into the kitchen table.
"Wh.. what you two did is wr...wrong. Your brother and sister, you shouldn't be having sex with each other like that.." She says, but it sounds like she is more trying to convince herself more then us.
"Don't be a hypocrite mother, I know his body turns you on just as much as it does me. I have seen you blushing when you see him without a shirt, or the times you walked in on him changing and saw that amazing cock. Judging by the smell, you came home and masturbated quite a lot after peeking at us. You want him to, you just don't want to admit it." Mila says, their face now only a few inches apart as she has mother almost pinned against the table.
"I... I don't know what your talking about." Mother says, slipping out under Mila's arm and moving away, back towards her bedroom door. "He is my Son, good mothers don't have those types of feelings for their sons. I don't want to see you two doing that again, If your brother and sister you need to act like it." She says, seeming to get back a bit of confidence now that she isn't being cornered.
"Deny it all you want Mother, but you WILL cave in eventually." Mila walks over and grabs mother from behind, pulling her into a hug from behind. "Just look at your son, he is even more handsome than his father, with a bigger cock to. I saw you and father doing it when I was little, his pecker was 5 inches tops, nothing compared to the Monster his son has between his legs." she leans in and whispers into mom's ear "When you decide to stop denying your feelings, we will be waiting." She lets go of mom and mom runs into her room and slams the door shut, a deep blush on her face.
Mila walks back over to me and sits back down.
"Are you sure you didn't go to far sister? She seemed really upset with us..." I say, a little worried.
"She is more upset at herself then us, she wants what we have more then anything, but is scared that it would make her a bad mother." Mila leans over and gives me a passionate kiss. "New rule, you can't leave until she gives in. Stay here and train Izzy till she gets stronger, and till Mother can't handle it anymore and comes to you. It will be worth it." I nod and rest my head against her chest, petting Izzy as we snuggle.

~ Several Months Later~

Dragons seem to grow rather quickly when supplied with a decent amount of food and training. Only about 3 months have gone by and she is already about the size of a Tiger, her wings being about 10-15 feet long. Our connection has gotten deeper as well, I can now here her voice in my head when she wants to talk.
"Come on Darius, we are done training for the day, lets go home and eat already." Izzy says with a pout on her face, or what could be a called a pout on a dragon.
"Okay, Okay fine, but we are flying home, we need to get used to flying together more." I say and move over to her and climb on her back. With my light frame she can carry me just fine as long as we arnt going to fast. Once im on her back she starts running before taking off into the air.
The view from above the treeline is amazing, bad sadly the trip isn't long enough to really enjoy it, as we are back at the hour in under 5 minutes. Izzy lands us about 20 feet from the house and I dismount. She pulls her wings close to her body and follows me through the door, moving to a part of the living room that we had to remodel to make room for her.
"Welcome home Darius" Mila says, walking over and kissing me passionately, her arms wrapped around my neck. I return the kiss and we break apart after about 30 seconds. Mother just staring at us from the kitchen, a look of jealously and restraint on her face. She still hasn't given in yet, much to Mila's annoyance, but we can tell her walls are starting to have cracks.
Me and Mila have gone back to that place about once a week since the first time, and every time we do its amazing. There have been a few times where Mila has caught mother following us to watch before running home, but even when she doesn't follow us we come back to a house that smells like she just masturbated for a hour straight.