I'm SO sorry. It is horrible.
It is the worst thing ever.
I'm with you!!!!!! I would rather clean up at home. To me, it's not just the stain, it's the smell. Why does it smell so much worse than regular poo?
Yes, you should let your fiancé have it! Gesh! What a jerk!
Please know that you are not alone.
I take a "change" bag with me everywhere. I bought depends, wipes, and carry a couple of grocery bags and panties and shorts. It at least makes me feel more prepared. Although, nothing can make me easily get over the horror of those situations.
Don't get down on yourself. No matter what.