Originally Posted by JB-the-Hunter
The whole reason they even used Peggy in the first one was to set up Sharon in the sequel. She is his main love interest.
Well, that and they needed a love interest, and it's not like Steve has a lot of WWII-era love interests. It's pretty much her and Betsy Ross, who is corny and prone to be confused with Betty Ross.
I was sort of being cheeky, anyway. making a joke about how secretive it is and how many non-essential characters seem to be included.