Hey, very cool idea for them during the spin-off. If she can't bear to write back to him, he'll just think that she has forgotten about him. You know, they say that absence makes the heart grow fonder, and maybe it does for them, but I also think it causes them pain in being separated from each other. How can Arnold move on having Helga as his first serious girlfriend? Even as kids, they had such a great amount of passion and fire in their relationship, and upon reuniting, there's no doubt that it would continue in the years to come.