Migrants are being taught how to attract women and sexually arouse them in German seminars run by a pickup expert known as 'Mr Flirt', it has emerged. Horst Wenzel usually makes his living teaching German men how to approach women but is volunteering his skills to help the country integrate more than a million refugees who have arrived in the last two years. The 27-year-old teaches asylum seekers lines including 'You have a beautiful voice' and gives tips on how to arouse women. Hostility towards asylum seekers has been on the increase ever since groups of foreigners - mostly young men from northern Africa - robbed and groped dozens of women on New Year's Eve in Cologne. Most of those in Wenzel's classes are from war-torn Muslim countries with vastly different relations between the sexes. One…