At first glance, it's easy to mistake it as another shoujo manga romanticizing unhealthy and obsessive behaviors. I would definitely be wary of that if you're easily uncomfortable with that, or you've had bad situations relating to that. I don't blame you for steering clear of this manga.
HOWEVER. I do implore you to push through it. Because unlike other shoujos which might romanticize this behavior, this manga actively addresses it as a problem that the male lead Hananoi has and struggles with -- and something that slowly starts to change as the story goes on. I say this too as someone who has dealt with my own huge personal codependency problems, and knows intimately the struggle it takes to overcome them. Yeah, some of his obsessive behavior is played for laughs, and at this point in the story, quite a bit of it still remains, but you can tell, bit by bit, he's working towards dealing with his demons.
I'd also like to note, without going too much into it, that a lot of his maladaptive behaviors have plot-related explanations behind them, and in a lot of ways they stem more from insecurity and trauma than just simply being a character trait he has. Just know that whatever you see, there IS a reason behind it, even if you don't know it at the time.
The real star of the show though is Hotaru, the main female lead. Sweet, caring, and exceptionally considerate, and someone who cares deeply about her family and friends. Someone whose silliness is a different brand of cutesy compared to many other shoujo leads I've seen. She has an aura that almost feels like going into a relaxing hot bath -- seeing her just soothes me. It's also not very often to see a character who loves food so explicitly that isn't played off as a joke, and as a fellow food-lover who knows how much it can bring people together, I think that's really wonderful. And more than that, she's a natural counter for Hananoi's unhealthy tendancies; setting boundaries, asking for what the other wants, so on and so forth. "If love means that only one of us gets to be happy, then screw love!" she says in the first chapter, and I think it's that worldview that is what pushes Hananoi towards a healthier path.
I really really love this manga. It has a lot of sweetness and fluff for sure, but it's definitely a lot deeper than it lets on. I have a lot of joy of seeing them work through their relationships, both past and present, and I really am excited to see what new development happens next.