Y/N knew the doctor since his 9th form.The doctor instantly fell in love with him.He never told him though because he was to scared he wouldn't feel the same and ruin their friendship.When he regenerated to the 10th doctor they even became more attached.But the day the 10th doctor regenerated he didn't say "I don't want to go" instead he kissed him and Y/N said "I don't want you to go".Y/N and the doctor carried on their lives as a couple.What happens when he regenerates into the 14th doctor?