listen...i think u should use a diaper thing again...im 13 and i have wet the bed my whole life.i have a brother and a sister. my sister always has a friend over,not just for the night but for weeks. and i try my hardest to hide the fact that i wet but it never works.sometimes they laugh at me and other times they comfort me. but they arent my friendsthat laugh...and u said it your self...u no that your friend wont mind...so just tell that u wet the bed and that u have to wear a diaper thingy so that u dont wet all over her bed or floor...