I am flexible on the relationship between the two characters. We could have
1. Father/Daughter or step variants.
2. Brother/Sister (Would be very cool!)
3. Husband / Sister in Law. (Would love this pairing)
4. Another combination
The key is the risky situations the pair get into. Such as
1. A night on the sofa - Watching tv together as a family our characters are on the sofa and playing with each other quietly leaving rather embarrassing wet patches.
2. Bed time - Sneaking into each others rooms.
3. Crafty blowjobs - Can be caught any time
4. Going to Church - Sharing a car to church gives them some time alone but should they be fucking in church?
5. Shopping - A trip to the shops means some fun in the car park.
6. Sunny Day - With everyone outside they have some time along but how long?
7. Handjob in the back seat
9. Caught and what the consequences?