Or you could go my route and become enamored of solo biking and the occassional bike shop ride. Bugging your BFF to become a "workout buddy" could work too, especially if you set some simple, achieveable goals. +1 on chatting with any biker you meet out on the road, plus check out the local charity fund raising rides, good way to meet people. Join a local bike advocacy group and get involved in their activities.

Enjoy the adventure and welcome to the group.