Clara Oswald ; with the Doctor.
She sat in a office chair, and rolled it next to his. "It would take too long to explain with words, so I will just have to do it this way. You still have a telepathy thing, if any part of you touches someone's head, so..." she placed his hands on the sides of her head, near her forehead, and closed her eyes, concentrating. She couldn't stop what happened next. The memories were far to strong. She wrapped her arms around his neck, pulling him closer, and pressed her lips against his.
Going through her memories:
Timelines, if they are doomed, can break off into different universes. For example if one timeline is doomed, it will be cut off, and most of the people will be moved into a different timeline/universe. Clara and the Doctor were both in one timeline, which included all the things from regeneration one to his latest regeneration. In that one, Clara and the Doctor are a couple after Trenzalore. They formed a relationship as they lived through the timeline. But, unfortunately, they both die, and are sent to the other timeline (with Jazmin.) This timeline, the Doctor regenerated, and instead of meeting Amy, he meets Jazmin. Him and Jazmin have chemistry. Then they meet Clara, who was moved to a base, and was given her memories from the previous timeline back, so she remembers the TARDIS, the Doctor, and everything.