Wait... no obligatory pregnancy ending after they had bareback sex all the time? I demand a sequel to correct this error! And include a naked apron or a hot spring scenario! Or even better: make it a series with all kinds of hentai classics!
Certainly an interesting title.
Still, his buddy just up and leaving the two of them alone...What a nice guy! He read the atmosphere and decided to leave them to it without interrupting/being a third wheel.
Great ending though! Ah yes, how nice that they finally found their perfect partner...Similarly insatiable when it comes to sex. Also, cramps? Yeah I'm sure those'll disappear in a day or so and then they'll get right back at it.