We get some nice domestic drama with Buffy's mom dating a new man and Buffy being all threatened by him.
Fortunately Ted's a robot and Buffy successfully erases him from their lives.
The only thing notable in this relationship is that it is the first time Buffy 'kills' a human. Of course he's not human but she thinks he is at first. She has to deal with the trauma of causing death.
Then as soon as she finds out he's a robot its like *poof* everything's better! Convenient tv fix. Bah deux ex machina. Fortunately this gets explored better later in the series...no, no, I'm not spoiling anything. You'll just have to wait and find out!