After Hogwarts, mid 20s
You were working for the ministry in the medical field.
And Ron was an auror so you would usually go out with the team when it was especially dangerous.
So on one case you got to room with him, and he was quite enamored with you.
he took you to get a drink one night and he promptly fell in love.
he told you his life story, his family, everything like that.
you told him yours too, you were basically opposites.
but he kept in touch after that case, even getting you flowers almost every two weeks, taking you out for your birthday, everything.
then he asked you to date him, and you said yes, obviously,
so when you both got a new case you decided to room together. so there you were, knitting or crocheting a scarf for yourself.. as he was chatting with the ministry about the case.