Girlfriend no longer wants to gain weight due to health reasons...Help please.

[Chevalier]

You assume the risk, much less prioritizing your fetish over her health will kill the relationship.  Plus needing to prove a size over what she wants pretty much makes things DOA, especially considering you want weight gain over just having someone maintain or tolerate trimming a few pounds, which would actually be healthy given the better fuel and muscles for exercise.

Never thought I'd say it, but somehow all this proof or narcissistic body positive confidence to be sexy without valuing admirers. is just bastardized to glorify obesity, like the weight is more important than the person/chemistry.

See what's negotiable, like encouraging on a cheat day, if you still want to be with her.  But yeah, as Carmen Electra would say, a girl can change her mind lol even if it's not what she meant.