Buddies needed for support / challenges

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Hi. I've been tracking my food on this site for years, so know how, when and what I eat. But it's such a struggle to lose weight and start exercising.
I tried hard I over two months to lose 7lb, but in one week on a dive holiday it's all back on.
So here's hoping there are others in similar situations who might like to be a virtual fitness buddy.
Having buddies to help would be a real bonus...maybe set up some challenges online, like lap swimming or walking?
I've never asked for help before, so this is a big thing for me to do. I'm desperate!