Peace through political marriage. Will the marriage last when one has already given her heart away? (A bit of Bellarke at first but trust me, it gets better)

Clarke is betrayed by who she thought was her friends. She is taken by the grounders and a shocking twist happens.(Clexa) (completed 2016)

As Clarke & Lexa deal with the aftermath of their decisions at Mount Weather,forgotten feelings resurface. Both leaders struggle to find themselves among a world expectations and masks,trust is tested & truths revealed. Story continues on how these emotions affect the alliance,while discovering there are still forces who wish to destroy the whole humanity and leave them to suffer.

If Arthur could only be saved by Morgana's blood, given WILLINGLY, how would Merlin achieve this? Would he be able to melt Morgana's frozen heart with her hidden love for her brother...for him?