From the strips we learn that Connie changed everything for Pete, dyeing her hair red (to help tell her apart from brunette Elly and blonde Annie?), becoming a gourmet cook, taking up all his interests, so that speaks volumes about her self-confidence, as did her attempts to place a personal ad or try to meet single men without appearing too desperate. Elly was her sounding board for all of this, but didn't always offer constructive advice; rather, she watched Connie go through her on-off relationship with Ted and even conspired to set up Connie and Phil.
I find it interesting, therefore, to note that Connie didn't manage to have a successful relationship until she'd moved 1200 miles away from Elly's influence. What does that say about Connie, Elly and their friendship?
[Side note: Connie's biography in Who's Who says, "When Elly quit university at the end of second year to marry John and support him through his final year of dentistry...", answering that question.]