Are you sure it is a toddler? Are your 2 Tamas of 2 different versions? Maybe you are confused and the character is a teenager. There is a popular known glitch that if you connect two different versions of Tamas and one of them is an adult and the other is a teen and the friendship level is high, there is a chance that they will marry and mate. Another theory is that if the adult uses the Honey (love potion) and it connects to a teen, the teen will refuse to kiss, but then if they keep being connected for a few times, they will mate and have babies.If none of the above is correct for the situation of your Tamagotchis, then I'm afraid you have quite a severe glitch. But as long as it does not affect your Tama severely, then it is alright.