When you have befriended Roy you will be introduced to his sister Adrian who you woo by finding six flowers (one of which is in Roys garden). The video below will show you exactly where you can find the others. When you have found ALL the flowers and given them to Adrian you will earn the 'In Love' effect which means you will spend less energy while training and won't need much food.
0.00 - Abandoned Warehouse
0.24 - Mick's Office
0.42 - Bar
0.51 - Cafe
1.06 - Your Home