Jack Lanzollotti and Jessica Campbell killed in pedestrian accident on June 21 in Boston.

Friends and family are mourning the deaths of Jack Lanzollotti and Jessica Campbell after they were hit and killed by a car in Boston’s Back Bay neighborhood.

“The two were almost interchangeable and they were together all the time. There’s no question in my mind this is a couple that probably would have gotten married and lived happily together for the rest of their lives,” Leon Nicholas, Campbell’s boss said.

The couple was out for a walk Saturday night when two cars collided. One of the cars hit them.

Campbell was a senior analyst for Kantar Retail. Her picture was posted on the international marketing firm's website along with condolences. Staffers in several different countries took part in a global conference to remember her.

“This was an opportunity for all of us to gather and let each of us say a few words. People were obviously broken up and very distraught,” Nicholas said.

Lanzollotti’s sister described him as a great brother and hard worker who had dreamed of working for the Boston Red Sox since he was a little boy. That dream was coming true and he was winning awards as a production manager for the team.