There will always be pressure from the social unit known as the family
I dont think its totally unjust.
My cousin was married with the son of my mother's friend. Ofcourse they were encouraged to know each other.... but the scenario was more of arranged kind of. Non of the two ppl were dating others or really very active in that dept (more of an introvert kind).
They are one of the most happiest couples I have seen.
Sometimes when family ties and the dynasty itself is reasonably strong... such things may happen...and they are not unwelcome at all.
Its not like 'Either you marry whom I tell you, or you die!'... its just preparing a platform by the people who love you!... A platform which maybe many ppl would love to have themselves.