Complex sentence: Carrie finds out she is actually not pregnant and, still having feelings for Austin, they make love on the roof of their apartment building, although Carrie is engaged to Lucas and Austin is engaged to Sami.
Split into simpler sentences: Carrie finds out she is actually not pregnant and still has feelings for Austin. Carrie and Austin make love on the roof of their apartment building, although Carrie is engaged to Lucas and Austin is engaged to Sami.