oo. . seems like couples do hav sex b4 marriage. .
cz all my other couples fren told me tat they dun practice sex. . so i was tinking whether they are lying to me cz of feelin shy.. .

Don't be naive. The society has progressed to such that sex is no longer a thing to be done after marriage.

There are something called sexual compatibility. Sex doesn't work just like that. There are things like getting it right between partners and how each session you learn something new. IF you only do it after marriage, it will take time to get comfortable with it and also time to adjust. Sure, you will still get baby and all but it's also about enjoying the sexual experience.

For the asian community, sex is only for producing offsprings. For the western world, it is some sort of basic needs for the human. For women, they might be able to last their whole life without sex (even masturbation) but that is very very very rare. For men, it's some sort of urge. You can't just say wait until marriage. These men will usually look for alternatives like prostitutes or self-gratification. It's nothing gross about it. Everyone does it. No need to hide or pretend to be saint. It is something that is stopping human race from extinction.

Having said that, I don't mean to tell you to practice free sex. Do it with dignity and pride. No need to announce openly. Just do it with the person you want to do and try to learn and enjoy the experience.