Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: (Moible) So for a year I've  been going to the gym in my high school trying to lose all the weight I've gained over the 18 years of my life. There I met my friend C. C was very nice to me and we got to know each other a lot over the time we worked out together to becoming friends outside of the gym. She is one of my best friends and we have known each other now for about a year.

So enough backstory to the problem, when C and I use to work out together she would always jokingly say if she ever were to gain weight rapidly i should slap her and wake her up to work out again as she has regressed before. Which always made no sense to me as C always had such a great body I mean athlete good. So I couldn't imagine her in any other way however over the past few weeks she has stopped going to the gym at all. I didn't think anything of it at first but as time went on she kept on eating more and more. She is now to the point of having a double chin is she looks down. And her figure is all but gone she always took pride in her health and I just dont understand what's happening.

I dont believe it's anything serious such as depression as I am with her nearly all the time and we talk constantly either on phone or at each other's houses, so I would like to think I would know if anything that serious is happening in her life. I have gotten very close to her and I dont want to do anything offensive such as remark on her weight (you know that whole never talk about a women's body thing) and as a guy I would feel to awkward to do it myself. But what if she was serious and she is regressing and needs a wake up call from someone. I feel if she realizes it herself she might get mad at me for not saying anything.

I dont know if this important but I don't make friends easily and only have about 5 friends total so even if this is the right thing to do I would rather not lose a friend in the process if that accounts for anything. Would I be an asshole for mentioning her rapid weight growth.

TLDR: C my friend is gaining weight rapidly and told me before to tell her and wake her up if that happens should I say something or would that make me an asshole.

telling a friends she is gaining weight rapidly