Wasn't it obvious that he was being so very annoying? Why couldn't he tell?
Did he really think that she needed someone like that, to follow her around, to give those seemingly witty answers to her increasingly annoyed questions? She would put an end to all this, once and for all. After all, she needed nobody. Nobody at all.
Then why haven't you ended it, hmm? Maybe you do like him around after all, whispered the tiny niggling voice in her head.
Well, maybe it wouldn't hurt to have someone around. Just to make things around here less boring... Yes, just for that. She pushed the little voice away, and commanded herself not to give any more thought on the matter, lest she changed her mind.
For as they say, love is fickle, and so is your mind, when you are entering the realm of love.