Charlotte Lamb 
Lovestruck [EPUB ebook] 

"You remember, last night? At the party? When you proposed to me?""Proposed… " Sam hoarsely repeated, going pale. Natalie gave him a dewy look. "Yes. You went down on your knees, in front of them all… ." "On my… " he breathed, with incredulity and horror. "Knees." She nodded."And asked me to marry you. You put your signet ring on my finger and said it would do until we could get to a jeweler’s to choose a real engagement ring, a sapphire to match my eyes. You remember, don’t you, Sam?"