Help me find this pls

I read this a couple years ago but i can’t find it anywhere. It’s about this woman who goes back in time and this guy she barely knew searches for her in the new timeline… ik it’s a generic plot but it really stood out bcs they were both pretty onssessive, i think it was similar to “Freedom in dreams” relationship wise (the power difference wasn’t as big tho) and she was always rational, goal-driven and ‘sane’… if anyone has any suggestions as to what it could be pls tell me