I cum in Millie's mouth

I want to groan with pleasure, but I do my utmost to conceal that I am close to cuming, and I surreptitiously move one hand down to stroke Millie's cheek.

Millie looks up at me and says:

"You're going to have to cum soon. My neck is getting tired."

"I'm getting close." I reply.

Millie looks at me with an untrusting look and says:

"Do not cum in my mouth."

Then she goes back to sucking.

This little interruption has brought me away from the edge of cuming, but Millie's use of her mouth and hands quickly brings me to the edge, and I feel that tingling sensation in my balls before I am about to cum, but I manage to conceal it well, so when my first jet of cum shoots into Millie's mouth it completely surprises her and she gags on it. Millie tries to move her head away, but I use the hand I placed on her cheek to grab her by the neck and hold her head in place.

My cum is still exploding into Millie's mouth, and she is gagging on it as my dick is at the edge of her throat. Some of it is cuming out around the edges of her mouth, and some is even coming out through her nose. Millie is struggling violently to get out of my grip, but she senses I am determined to fully empty my load in her mouth so stops resisting, and as the last cum comes out of my cock I very slowly move her head back and forth on my cock.

After I have finished cuming I let go of Millie's head and lean backwards. Millie stands up, shoots me a furious stare, screaming:

"You fucking ass hole! I told you not to cum in my mouth!"

She then rushes to her room, banging the door shut behind her and locking it, and I smile to myself when I hear her gargle with mouth wash.

I sit and watch TV for a while afterwards, enjoying my post-blowjob high, then I decide to call it a night and go to bed.