This is the place to post questions and discussions on usage and style. The members of the Wordwizard Clubhouse will also often be able to help you to formulate that difficult letter.
Can one say
a. When he said he loved me he made me happier than at any other time in my entire life.
Does it mean
1. that he made me happier than I'd ever been.
2. that he made me happier than he'd ever made me.
I think the normal reading would be 1 but 2 is also possible.
PS I would expect that the statement was not literal.
I'm puzzled therefore I think.