It actually does not matter much. You are best used as a fuck toy, a cock sleeve.After I wrote this thread, I found out 1 more thing:
My friend told me that she got the green light from my husband before she did this!!
Frankly, I am now afraid that if this situation happens to me again (may be by another guy at another place), I really do not know whether it is set up or I am being abused for real.
The fact that your body responds by providing you pleasure is lucky for you, but somewhat immaterial