New Erotic Romance Novel Help Request

Often, finding the perfect word or series of words to match a particular situation in a book is a daunting task. Below are two sentences that almost say the same thing but not exactly. Please read them and let me know which one you prefer.

1. The two met in a study group one evening during Ally’s first year at Harvard and began a friendship that flourished into the most superlative relationship either of them had ever known.
2. The two met in a study group one evening during Ally’s first year at Harvard and began a friendship that flourished into the most wonderful and enduring relationship either of them had ever known.

Thank you,

New Spanker