My partner and I constantly have fun while eating, but I’ve noticed that they are more eager when suggesting unhealthy things. When I say I’m on a diet, they respond with things like, ‘No way, you’re beautiful just the way you are.’ Is this a flirting game, or is there a communication problem? Am I overthinking it?
I think you’re just making this up for no reason. I mean, there’s always some hidden intention behind these things; I believe they do it intentionally. On one hand, they say ‘you look beautiful like this,’ yet they don’t encourage a diet, which is contradictory. They might be trying to figure out if they can control certain things.
But I think you need to clarify your confusion before you immediately attribute bad intentions to your partner. Did you properly tell him, ‘I’m on a diet, don’t offer me things like that’? Maybe he’s genuinely unaware.
Ordering food is a strange situation. Maybe the intention is good, but if it bothers you, having a conversation with them might be helpful.
Actually, I’ve brought up this situation a couple of times. I said, ‘Don’t suggest me fried things while I’m on a diet,’ but it still keeps happening. They say, ‘You’re overreacting’ and continue. I’m really confused.
I’m saying it clearly, if he says ‘you are beautiful like this’ again or something like that, be clear: ‘This is my body, my choice; please respect it.’ Short and to the point. If he’s always making excuses, think more seriously 
Honestly, their behavior bothered me. Why would someone undermine your healthy decision? It’s a matter of power. Calling someone beloved shouldn’t mean manipulating the other person; it should be about support. Be careful.
I think the guy likes you that way; there’s no need to read too much into it. Can you really give up your diet based on your lover’s words? People should open up to their partners anyway. We shouldn’t blow small things out of proportion.