When travelling as a couple there are advantages and of course disadvantages. Normally solo travellers only depend on themselves and do what they want to do. If you travel as a couple you are 24h/24h with your companion and this can be stressful because you don't have any time for yourself or you disagree what to do next, but if you love your companion you will be comprehensive and reasonable. Travelling is the best experience that you can have as a couple, travelling will let you know more of the other person and your relationship will become stronger. Bellow you can find a travel couple guide with great ways to keep your relationship alive while travelling.