What do you think the new symbol of romance in millenial era like this? I want to give my hubby flowers or candelight dinner but it seems so 'boring' nowadays.

There is really no 'one way' to express love. Similarly, there is no set formula to make your partner feel special. Sometimes small acts of love (helping around the house, taking care of the kids and supporting the partner's career) can brighten your partner's face. But if you want to do it with a big gesture, how about doing an activity that you both enjoy together. If your partner loves adventure, try hiking together, if you both enjoy watching a movie, go on a movie date, if you both like traveling, book tickets to a place you both have never been too.