Sentence 1: My friend Bobby called to invite me out to dinner. 
 Sentence 3: When I got there, Bobby surprised me 
 Sentence 4:  It was a party with many of our friends for my upcoming birthday 
 Sentence 5:  I never suspected a thing, but it was a great evening 
 Option 1: We stayed in instead. 
 Option 2: We settled on a date, time, and place.