cleansing the system

I weighed myself this morning. i have ballooned up to 147. It took 2 days to set me back 3 weeks in weightloss. I want to die. My best friend ate everything the same as me and I worked out and she didnt but I'm the only one that gained anything.  How does that even happen? But she says she feel terrible and asked me about something to cleanse her system because she knows about my disordered shit I deal with and that I would know about it. Her words, not mine. So we are both doing a juice cleanse. But it just pisses me off that she's ok with it if it benefits her too. But if I was the only one wanting to do this, she'd be pissy and shoving food at me and trying to embarrass me into eating in front of everyone like she's started doing a few weeks ago. Whatever. It's not like she has the willpower to do it anyway. She wont last 1 day let alone 3. We did a fast back at the beginning of the year and she didnt even make it 12 hours, so this should be amusing at least. She wants to do 3 days but I'm going to shoot for 5. Then we'll see from there. I have no time to screw around now that I've set myself back. I have 11 weeks to lose 27 pounds. This has to happen.