Just be yourselves, old fashioned ways of "setting the mood" will work.
1. Spontaneous romance 2. Qualitytime 3. Appreciate what you have, not complain about what you lack 4. Chivalry (more on that later) 5. Gentlemanly or "polite" actions 6. Respect 7. Courtesy 8. Kindness 9. Consideration 10. Compromising 11. Communication 12. Affection
Thank you for the question, and it does show I'm really old fashioned. Chivalry is the behavior or traits during a date that shows respect for that other person. It is a version of upfront and respectful courtesy and appreciation to that person. Examples of that would be opening doors for them, and letting them do things first as a show of being romantic.