hi guys, i am quite surprised no one mentioned qba, westin. it got the most romantic atmosphere to me. and the price is not too expensive 250 for 2 if no wine. 100% satisfaction.

my top 3 place to proposed would be:
1) tamarind spring ( google it) super beautiful and romantic place to propose.
2) qba ( better if you have starwood card) 50% hehe.. my personal secret. eat like king bill come up less than 150 for 2.
but the card exp la.. 600 a year, but a lot of freebies.
3) cafe cafe ( nice atmosphere, romantic and wont burn a hole in your wallet, with appetiser, main and drink for 2 person around total 150

all the best man! good luck .