After the experience waking up with Pinkie Pie in her bed, Twilight had been feeling an emptiness, one that she never let herself acknowledge before. It was a longing to be loved at more than just the emotional level. Twilight was craving the physical aspects as well. She had actually been considering the offer of ‘pity sex’ with Pinkie. But she was reluctant to do this. Twilight knew that Pinkie could give her what she wanted without issues. Twilight was sure it would be enjoyable. But Twilight was afraid that she herself would make some emotional attachment to her friend, more than what she thought was being offered.
Now here was a chance to have those wishes and dreams come true.
Not that Twilight was desperate or a slut, but something inside wanted this beautiful pony more than she ever wanted anypony or anything. Something deep in her heart and mind told her that this was the right thing to do.
Twilight wanted to have a pony in her life, a pony to share with, a pony to be with, a pony to be a mate and helper. Somepony to grow old with.
Now Twilight was starting to suspect her wish had been granted.

Warning: Chapter 5 includes Rape.