I am of the opinion that we all have something romantic inside us, romanticism may manifest itself in different ways from the most romantic (dinners with candles and rose petals in bed ), to the most subtle romantics (coffee made in the morning), we are all romantic, but we all are to different degrees.
When I met my husband right away I realized that he was one of those “most subtle romantics”, he grew up without really knowing what romanticism is, and over the years we have learned to, by my side lower expectations and by his, put a little more effort.
After 18 years together we know more or less how romantic days like Valentine’s Day, Anniversaries, and Birthdays will unfold, usually by me planning something romantic and he trying to support me. I know that waiting for him to plan it all is not a fair expectation, but it is only fair that he be enthusiastic if I am the one who is planning the occasion.
When our partners are less romantic than we are, we have to have patience and understand how their minds and emotions work and work with communication so that they can understand what that special planned moment means for us (the more romantic kind).
For example, I may receive flowers once a year (if any), but he writes and calls me during the day, every day. He makes coffee early on Sundays and take care of the children or household chores so that I have my free time and enjoy them as I please. Those are the details that I have learned to appreciate because they come from a genuine loving place in his heart, and all the little candles in the world melt when compared to his daily attention to me.
My advice to you in the event that your partner is not so romantic is not to press for romanticism, but learn to see romance on a day-to-day basis and if you want your movie night, or fancy dinner, or bathtub filled with rose petals, then plan it yourself together with your partner and enjoy every minute of it.