Motivation friends

hi , my name is Cristian and I am new to the lose weigh thing. I'm have always been able to keep my weigh under control. Now that I'm getting old it seems that I'm gaining pounds and no losing any as I used to. I now the whole dieting and exercising is kind of hard when you do it alone and that's why I need friends that can keep me motivated. I need to lose 16 pounds and I need to gain some muscle. Thanks