Hello!

Yes, Osgood -- those are the long running DC romance serials, not including the recurring characters as you mentioned. There are quite a few shorter serials, and I come across ones all the time that are two or three parts. A few you may be interested in dpAust:

"Am I Too Young for Love?" (3 parts -- Heart Throbs 125, 126, 127)
"Love is What It's All About" (3 parts -- Young Romance 154, 155, 156)
"3 Loves... 1 Broken Heart!" (2 parts -- Young Love 80, 81)
"My Time to Love" (2 parts -- Girls' Romances 135, 136)

I hope this helps!

Jacque