Readers who interpret the relationship as overtly homosexual quote such lines as the fact that Charles had been `` in search of love in those days '' when he first met Sebastian , and his finding `` that low door in the wall ... which opened on an enclosed and enchanted garden '' - an image that some interpret as a Freudian metaphor for homosexual sex , though it recurs when Charles is expelled from Brideshead by Lady Marchmain , suggesting it refers more generally to the glamorous world Sebastian represents : `` a door had shut , the low door in the wall I had sought and found in Oxford . ''
This act had also influenced Charles , who had been `` in search of love in those days '' when he first met Sebastian , `` that low door in the wall ... which opened on an enclosed and enchanted garden , '' , an important metaphor in the book .