A/N: I haven't written anything for a while, but here it is. Please review! Thanks!
Denial
He would never admit it, but Sheldon enjoyed the rare times when only he and Penny would spend an evening or afternoon together. He told himself that it was only fair to allow her to pick the movie or television show they would watch after she would chauffeur him around.
He would tell himself that he couldn't wait until Leonard would come home and take her off his hands. He wouldn't think about how it was becoming less frequent that Penny would come over to 4A to see Leonard. How more often than not, she was coming to see him. How, when he mentioned that Leonard would be home soon, she would frequently leave before he even arrived.
Or how, sometimes, he didn't wait for her to come over. Sometimes, sometimes he went to her. Often he would fabricate a semi-legitimate excuse to go over and somehow he would manage to spend a whole evening with her in her apartment.
He wouldn't think about how he would tell her things about himself that Leonard did not know, things he couldn't tell Amy, his girlfriend.
Sheldon didn't think about how she told him things that no one, not even her siblings or parents, knew about her. Things she had done, dreams she had, her deepest desires. Things she couldn't tell her girlfriends or Leonard, things she had never told Kurt whom she had dated for four years.
Sheldon didn't think about how on Wednesday, Halo night, Penny had a date with some muscle head, Matt or Mike or something. Sheldon was not thinking about the knot in his stomach growing larger as he waited for her to return. He didn't think about listening for her keys or her voice or her laughter.
Sheldon didn't think on it too much. Any time he did, he would vomit and become sick, although he still couldn't understand why.
Sheldon didn't realize that Penny had returned home from her date after only an hour feigning stomach cramps.
He didn't realize that she was home waiting for him to realize that he was waiting for her.