Have you heard of the BackPack test?
It's basically about taking a week long camping trip with someone you believe is "The One" with whom you want to spend the rest of your life.
Such a trip will always have moments of stress. It may suddenly rain, and you get unexpectedly wet. Maybe one of you will develop a blister. Maybe one of you will feel like transferring some weight from your backpack to your partner. Maybe you will get lost. Maybe one or both of you will get very tired, and grumpy.
You've got to experience extended stress; even better if the stress is unexpected.
If you and your partner can survive this stress together and still come out of it with love for each other, then yes you've found yourself "The One". .
PS. I travel solo. 🤣