Breeding?

[Pip]

I've had my Tamagotchi for a long time now...acually since they came out, but I've never bread 2 of them 2gether. How?? I know u have to get 4 hearts for another Tama, I've done that, and you can only breed adults-I'm pretty sure, but the only differance is when the Tama my Tama is in love with comes over to give me a presant, it has hearts over it's head, not sunshines. So can someone answer me-how do you breed 2 tamagotchis together??