When you're down for the count, can the person you're with pull through and be the rock you so desperately need? Can he or she be your shoulder to cry on and never judge you for your vulnerabilities?
When the shoe's on the other foot and you're being the supportive one, does your S.O. accept your love? Or do you get shut out and pushed away? At the end of this experience, whether you should marry the person you're with should be crystal clear.
If you can't travel with the person you're dating, you might as well end it right now. Who we really are comes through when we're traveling. We're stressed, overwhelmed, and in a place far outside of our comfort zone.