The drama surrounding Charles begins at the Riverdale High homecoming dance of yore, when F.P. noticed Alice and the terrible, awful, no good Hal arguing at the dance. Hypothetically, the teen couple should have been overjoyed — they won king and queen that evening! — but, instead, it was Yell City.
By the season 1 finale, “The Sweet Hereafter,” we learn the issue at hand was Alice’s surprise pregnancy. Although Hal wanted his girlfriend to have an abortion, Alice wasn’t so sure. Hence, the very scream-y tension.
Also, it is now very likely Hal was so determined to terminate Alice’s pregnancy because he knew the child definitely wouldn’t be his. Because, you know, Falice.