Love to Spare by Janet Lambert

Cinda Hollister is ready for a fun summer, yet has a more serious perspective on life since her freshman year in college. Although she accepts a job as secretary in her father's office, she also finds time for pleasure as she prepares for her brother, Warren's marriage to Melody Ayer. And to add to it all, one of the ushers, Keith Drayton, turns out to be quite attractive and personable... and interested in Cinda! Yet there is enigmatic Paul Banning who still wants Cinda to be his steady girl. An unexpected turn of events makes clear to Cinda that though she has "love to spare," there is only one who truly holds a special place in her heart.