I am a filipina and must say that I have this latin asian blood in me, also an incurable hopeless romantic..maybe not hopeless I have my other half now
In the old filipino culture days we used to have "harana" means serenade in english, a guitar and good voice through any ballads or love songs can be romantic.
Another alternative is a ring hidden in a cake or ice cream, its somewhat romantic and surprising.
Or you can cook special food and prepare everything in special manner with the ring next to it. You can hire a violinist while you get down to your knees
As for me, after a long trip from climbing the summit of Mt. Kanlaon ang straight to Malapascua. Hungry, exhausted and thirsty because of the heat phenomenon. Hubby took me for a sundae cone trip, while I went in line for sundae. He went to the jewelry shop nearby (I thought he went to get cash from atm) came to me and went down on his knees. I was speechless and felt a bit dizzy he had to hold me. I did say yes and now happily married.
Good luck to your marriage proposal.