I missed the "SG" on the pad. However the drawing definitely isn't Sam Glanzman, no matter how heavily he might have been inked. Besides, Glanzman almost always signed with his middle name, "SJG." After some pondering and Googling, I concluded the penciller is probably Sal Gentile. Though best known as Charlton's editor after Dick Giordano moved to DC, Gentile is credited with pencilling and inking romance stories as early as 1957 and as late as 1971. He also seemed to have done a lot of inking, though the inking here is surely Vince Colletta.