The Remnants Of Forgotten Love

Two people in love, falling in a storm, one coming out forgetting everything about the person she loved,
While the other remembers that once there was love between him and her, keeping those memories and love locked away in his heart
And keep remembering the love of them on her behalf,
Not allowed to again chase her or fall in love again because of the contract he made, her life or her love for him, was the choice he was given, choosing her happiness over his, he thinks the matter ended there, but he didn't know her love for him was strong enough that it will only be him even if they lived countless lives.

Read to find out, what this is and what will happen later.