Sometimes when Im talking to teens, I draw an analogy between the bonding capacity of the body and adhesive tape. Adhesive tape is not made for repetitive use. The strongest bond adhesive tape is capable of making is formed with the first surface to which it is applied. You can remove the tape and reapply it to other surfaces several times, and it will still adhere. However, with every application, some of the adhesiveness has been compromised. Finally, if you continue the practice long enough, there will not be enough adhesiveness left to make the tape stick to any surface. God intended that the bond between mates be the closest and strongest one they are capable of forming. That is why Paul makes it very clear that the body is not for fornication.