Welcome to the site!!! I like this type of story line also. I would recommend
Fated to Love you-I can see that it is one you plan to watch list. I don't want to give too much away about it, but it does fit your criteria.
Birth Secret - this has the amnesia storyline that you are looking for.
Spring Waltz- It's kind of old but it's good. It's about a boy and girl who fall in love and are then separated and meet again when they grow up.
Hope you enjoy!!