I feel like at 6 you’re not going to be tripped up by teenage relationships like you would landing in a hormone flooded/different brain state in your most important social years
It sounds like a plan for having no friends from school
It would be so creepy trying for the same partner. So much of relationship building is learning about each other and you’ll never be surprised by their side of those conversations
Or perhaps if the red pill is turn six today variant that pessimists think it might be, you might get actual immortality. Say we work out immortality in 2060, that might be difficult for someone 50 today, but easy to reach for someone 6 today.