Advertised as a rom com tine travel novel--it's surprisingly funny--longer preview here than on Amazon--and it's time travel forwards, not backwards--However

in my opinion Paul Boules' Planet of the Apes--I saw the movie dubbed in Polish in Poland is the best. https://www.google.com/books/edition/Viking_Unchained/4YmdEAAAQBAJ?hl=en&gbpv=1