You may also check hill stations like Mussoorie or Manali in Jan 2019 it will make you feel that you are on an International tour! As you may see amazing snow fall there!
The Maldives is not only the tiniest but also the most gorgeous and popular island destination of the Continent. The place is so gorgeous that it can increase the exoticness to your passionate and romantic life. Mostly known for its enchanting ambiance, crystal clear azure waters, and the most outstanding scuba diving and snorkeling picture, Maldives is certainly one of the most appropriate romantic destinations in Asia.
Good Luck!!
Mauritius or Maldives, Bali, Srilanka are great options internationally. Within India, any hill station would be great. Manali, Leh, Sikkim are especially good spots.
In terms of International tour, Sri Lanka especially the southern coastal areas would be a good option. You have got some great beaches there. If budget is not a constraint then countries like Austria, Hungary etc. are a great place to visit.
My top 5 recommendation in India are :
1. Dharamshala / Mcleodganj
2 Patnitop near Jammu
3 Darjeeling and Kalimpong
4 Ooty and Coonoor
5 Landour, Mussoorie International :
1. Singapore
2. Dubai
3 Maldives
4 Spain
5 Turkey