29. A crossover couple (romance) you like but think it would end badly or cause problems.
Morgana/The Doctor (Merlin/Doctor Who) So, the Doctor meets Morgana when she is still good and they fall in love but he leaves and when he comes back he knows that Morgana has changed and he tries to help her but the story is written and the Doctor knows it. This crossover has "sad ending" written all over xD.