As if fictional love triangles weren't complicated enough, certain shows such as The Summer I Turned Pretty and My Life With the Walter Brothers kicked it up a notch by getting siblings involved. The Summer I Turned Pretty, which is based on Jenny Han's books, focused on Belly (Lola Tung), who gets caught up in a love triangle with the Fisher family. After exploring her feelings for Conrad (Christopher Briney), she started to reconsider whether his brother, Jeremiah (Gavin Casalegno), was her perfect match.