I used the term "romantic relationship "so as to differentiate the type of relationship that I'm referring to from other types of relationships out there.

Living in a romantic relationship is often a cause of break-ups.

I don't think this is true. Being in a relationship with the wrong person one of the causes of break-up. A relationship that would work out requires noth partners in it to commit to each other and when any of the partner fails to that, the relationship will start having problems. Romance is part of a healthy relationship and i don't think that it's responsible for break up.

Thanks for your support