Donna Donna!! (1987)

Felix falls from one love into another, but never knows how to approach the girls he like. To prove his friends he really knows the ropes, he announces his engagement to Donna, his only familiarity with her is a picture on a poster. On his engagement party, he tells that she has gone abroad. After that he falls in love with his new roommate Esther. When that relationship strands, Felix meets Donna's mother by coincidence.