Another fairly complex event (Valentine's Day special, Katie's route):
NTR off first: if PC is in a relationship with Wifey, he'll be able to take their love life to a new level. "L" word included! You'll need to pass different stat checks for the best outcome.

If the PC is not in relationship with Wifey, NTR off:Not much happens. Yup, that’s what friends are for.
If the PC is in a relationship with Wifey, NTR On:The choices you have made so far will change the first scene. If you have Snoop, use it for an extra NTR scene.

If Wifey is experience in something, she will be able to do something with Jamal.
If she is inexperienced, she’ll stop halfway. (Mostly dialogue difference)
After this you can progress to the normal date (same as when NTR is off, see earlier)
If the PC is not in a relationship with Wifey, NTR On:Same Snoop scene, but no intimacy with Wifey afterwards.