I am me,

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I’ve been on mfp over 3 years now. Had people come and go, made friends for life too, but more recently, thought I’d made friends, only to have them copy me, slate me, then block me. Not only that, but get their other friends to have a go at me and say I’m copying them.
Where’s the motivation and helpful advice in that?
It’s made me feel like I’m a failure, all because I had to have gastric bypass surgery in order to save my life. And this other person is now saying they had the same surgery this week after asking me for details of it, and she tells others she’s had the the surgery for the same reasons as me. They all feel sorry for her.
Why do people do this?
Before surgery I managed to loose weight, then I had surgery and was so ill, my dr thought they was gonna loose me. I also could have ditched mfp but I didn’t because mfp was my motivation. Now though, because of that woman and her mfp friends making me feel like dirt I don’t know what to do.