Unfortunately, I have to agree with everyone who says that talking about weightloss as being a minefield. Even in my short time actively trying to get healthier I've noticed that people often disregard or actively attempt to sabotage my efforts. Come on, people, eating McDonald's is not compatible with what I just told you about eating healthier! Whatever their motivation, it's definitely tough to deal with harsh comments, people disregard your wishes or active sabotage. I also know what it's like to have a socially awkward guy point out something about my weight that I very clearly already know. I was able, at that time, to laugh it off, but sometimes I wish I hadn't.
Just like working towards a healthy lifestyle, one mistake in social interactions doesn't constitute a total failure; go back in on the next shift and be your upbeat, outgoing self. No need to re-hash the past. Best of luck!

