you guys dont need 2 tamagotchi's but it does need to be a connection. i have one and im on my 3rd generation. their so cute with the little baby on the screen and the parent... i miss onnishi! *sob*
To get tamababies u need 1 girl 1 boy tama (obvius) once there adults make theme fall in love (4 hearts in friends). After 48h of ur tama being an adult u may mate. Just cannect and u will have tama babies. At least thats how it works in the us verison
I had to do loads and loads of connections to have babies. I only did the 'present' connection not the game because in the game one they compete against each other, making them rivals.