I just thought it was mandatory like it is in the US.
You are correct, it is not
mandatory customary. Yet, my experience says that RW want the best from both worlds. They want the gallantry and flowers as customary with RM, and they want St. Valentine's Day and engagement ring as customary with AM.
I have friends who are not rich who spent months worth of their salary to get one for their girls.
Yes, they spent too much! One does not need to go to such exorbitance.
After living with her for some time, seeing how she loves me and already agreed to marry me, I see no point in giving the expensive ring.
This comes across as
cheap. At one time you wanted to give her a ring. Now that you see she is totally into you and wants to marry you, you will never tell her that you had an expensive ring.
I will return it and invest the money in my business and our future.
Will it matter in 5 years, 10 years, ....until death do you part?
Santo, what you seem to be missing is the
symbolism of rings and diamonds - the concept of
eternity...
forever.
The fact that you believe this woman loves you truly is even more reason to buy GIVE her a ring. You can probably afford a 3/4 ct diamond of good color and clarity, something she would cherish
forever. Remember that RW appreciate generosity and abhor "greedy." And generosity does not mean it is necessary to spend more than you can afford.