A Catholic priest has apologised for joking during a sermon that true marriage can only be between Adam and Eve - not ''Adam and Steve''.Reverend Frank Wainwright, 48, a Deacon at St Gregory's Church in Cheltenham, Glos., made the controversial comment during a Sunday service. He was preaching on the theme of marriage when he claimed that same-sex civil partnerships are not considered as marriage by the Catholic church. But his ''flippant joke'' sparked five complaints from his congregation and has been branded as homophobic by gay and lesbian rights groups. Rev Frank Wainwright, who lives in Cheltenham, Glos., apologised...