Michael, Brent and Sarah

Twenty-six-year-old Michael is determined to find someone to love, but is struggling to hold down a relationship. Despite having had 17 girlfriends in the past, some of whom lasted only a few days, his autism means that even holding a conversation with a girl can be a huge challenge. He goes to a speed-dating evening and then, after a pep talk from his mum, he pulls out all the stops on a blind date with Helen. Twenty-one-year-old Brent, from Plymouth, has been single for nearly a year since coming out of a long-term relationship. Meeting girls can be hard when he doesn't know what might come out of his mouth on a date. Brent's Tourette's syndrome includes shouting, swearing and involuntary movements, but dating can help with his condition. He goes on a date with Lizzie and they then go snow-boarding. Sarah from Hertfordshire was 18 when she suffered a stroke during an English lesson.