Open relationship (ending 3)

Few months later Miyu proposes her husband to have a open relationship.

Miyu: (rubbing Shusaku's cock while they're both naked) it'll be loads of fun trust me!

Shusaku: (his balls in the hands of his teenage wife) ahh! Ok if you say so!

Shusaku is a boring 41 year old man married to a sexy 18 year old girl. He's secretly scared of losing her and always spoils her with money and gifts and gives her everything she wants so she doesn't leave him.

Miyu: (kisses the tip of his cock) you're the best honey!

She rides Shusaku's cock all night after that making him ejaculate repeatedly until his balls are like dried raisins!

The next day she introduces the third participant in their marriage.

#######################################

[Bedroom]

Miyu: (whispers) your dad thinks it's our first time so play along.

Shusaku feels very shocked because Miyu's chosen partner is his own teenage son Takeru! He should stop this but his cock gets embarrassingly hard thinking about watching his son have sex with his sexy teenage wife.

Miyu: (sexily) you're a virgin aren't you Takeru-kun?

Takeru: (plays along) yes.

Miyu: (slutty grin) that's so sad! Ok I'll take your virginity and make you a man!

Takeru: (fakes shock) but you're my stepmom!

Miyu: it's ok. Your dad and I have an open relationship. He won't mind!

Takeru: is that true dad?

Shusaku: (embarrassed) yes it's true. You can have sex with Miyu.

#######################################

With Shusaku's permission Takeru and Miyu get naked and have sex. They're both turned on and the sex feels hotter because Shusaku is watching them.

Miyu: (getting railed by her teenage stepson in front of her middle aged husband) ahh! Your son's cock is so much bigger than your cock!

Shusaku: (embarrassed at how hard his cock got watching his teenage son fuck his wife on his bed) I can see that.

Miyu: (does the v sign while having her stepson's cock in her pussy) but it's ok because I love both your cocks!

Takeru: (feels his stepmom's wet pussy getting tighter) ahh! I'm cumming!

Miyu: (being inseminated by her stepson in front of her husband) yes! Shoot lots and lots cum inside my pussy!

Shusaku watches in amazement Takeru fills Miyu's pussy with thick white cum! Shusaku is 41 years old so he can never cum this much.

Miyu: (satisfied) damn Takeru you really filled me up! Shusaku wanna go next?

Shusaku: (embarrassed) I don't think I should.

Miyu: (winks) it's ok. We can see how hard you are. You should have your turn!

Shusaku feels embarrassed about having his son's sloppy seconds but Miyu's pussy feels amazingly wet and pleasurable.

Takeru: (kisses Miyu while his dad's dick is in her pussy) your plan worked.

Miyu: (thumbs up) yes this is the best!

#######################################

[Months later]

Few months later Miyu is pregnant with her second child.

She doesn't know whose baby it is and that's the hottest part of being in an open relationship!

[Open relationship (ending 3)]