The text book meaning of Romance is "excitement associated with love and all the expressions that come with it". The way I understand this is - if love is made up of intellectual, spiritual and physical connection, Romance is the intellectual and spiritual aspect of it. I put the physical aspect under Sexuality and it could be as innocent as holding hands to the most physical act of love making.
Romance can stand alone and so can Sexuality but while romance on its own can be handled by almost everyone, sexuality on its own can be handled only by very evolved beings. This is because sexuality on its own erupts the very fabrication of self in contrast with social conditioning and its repercussions can be seen. It can be extremely life altering and requires a lot of maturity to just get through with the way things are perceived to be. The end result is usually complete obliteration of self, if and only if, someone can go through it without losing their mind first. So it's difficult to understand and should never be tried casually.
Romance on its own can be that self-altering only if the individual takes it that seriously. The problem with romance on its own is that the chances of its fizzling before it can become self-altering is real. Since physicality persists but anything that is of mind and spirit cannot be seen and hence chances are can be dismissed by most people as something simpler. The repercussions are less obvious so the pain is proportionate to the individual's sensitivity and awareness.
Both are painful but while in romance pain is proportionate to the individual's sensitivity and awareness, sexuality becomes painful by social conditioning and repercussions that come with it. Both can be lessons - just like anything else - only if the individual is willing to learn from it. Actually romance or sexuality are all pathways or means to get to the same goal - unconditional love. But just like every other pathway, it depends on how much truth and introspection one can bring to the process. The results differ and so does the elegance associated with these paths solely based on that self awareness.