They need family and society backing. The boy shd be working. Here, students do jobs. It is impossible in Pak I guess.
Girl family can support her education even in laws house. No dowry is needed. Just let the couple live.
It will increase nation's work productivity. Mainly, youths waste 16-22 span in fashion, flirting, socila media etc basically, in pursuit of the 'love'. Once married, a sensible person always get pressure and become more practical. Also, they mustn't have kids till 25 nor familiy shd pressure. If marriage doesn't work out, they can divorce or continue and have kids.
Pakistanis must encourage to raise pets (costly) or gardeing perhaps. This teaches children responsibility and make them realise that raising children or family is no joke. Mere giving birth is not an achievement,.
Plus, we shd increase tolerance to marry divorcee, especially with no kids. We have many taboos and lack many basic understanding. SOmeday, I can write on it.