SOLVED. Fantasy - couple is reincarnated through multiple time periods. [s]

[Olivia]

Novel about a couple that are reincarnated over and over again in the same place but different times. Each time they are reincarnated into different people and have a different form of love aka romantic love, sibling love, motherly love, etc.
Every time they are reincarnated there is a different section of the book, like a bunch of short stories put together but it is not in chronological order. Each story somehow connects to another, like in one, the boy and girl are siblings and the boy sacrifices himself to a vampire and in another story which takes place in the current time, they are archaeologists and find the remains of two bodies which can be inferred as the remains of the sacrifice.
The book cover was red and had a girl on it. I read it around 2015-2016 in hardcopy form. I think the author was a woman.

[Rosa]

Midwinterblood?

[Olivia]

Wow yeah it is, thanks so much!

[Rosa]

Great, you're very welcome! It sounds fascinating.