I have a good, but complicated, relationship I think.
Generally: I love food, just for what it is - how things taste, how they make you feel; I really take proper pleasure in it. I eat pretty well - 2 meals per day plus sometimes snacks plus lots of water/etc. Over time I've learned how food makes me feel, physiologically - so, no carbs meals at lunchtime because I'll fall asleep an hour later; too many sweets make me feel nausous. I tend towards proteins and veggies and some fats, though definitely more in love with pasta and potatoes during winter.
I do have an incredibly sweet tooth which I try to temper - if I have sweets or cake in the house I will hoover them down; it's definitely close to sugar addiction so I keep an eye on it. I buy nice and expensive cheeses, pork pies, etc to wean me off the sugar habit, so I get a treat if I want it but in a much smaller portion (that is, I'd never eat as much cheese as I would cake).
That said: my relationship with food in early life was a fcking mess. My mother is one of those who under-eats, serves up miniscule portions of food, will eke out the last tiniest amounts of food/eat food that is completely out of date, weight-shames me (together with its evil sibling - 'are you exercising at the moment?'), thinks that processed and fast food are the devil. Deeply embarrassing big family Christmases when mum - having shooed everyone out of the kitchen - would serve up about half the amount of food needed for a regular meal, let alone for a big festive bash.
So when I left home, I ate everything and it took me years to undo that. When I'm sad, my first instinct is to binge the processed food - tins of ravioli, packets of Mr Kiplings - that would never be allowed in my parents' house; though I keep those urges in check these days. When I stay with my parents now I always take an extra bag of food, hidden in our bedroom, to last the stay. Even though I mostly don't over-eat, I do over-buy - lots of panic about possibly running out of food at home; and when I host for people, I always over-cater.
Someone asked earlier 'why get so hung up on food?', and I think it's because food has so much meaning and emotion associated with it. I am so wary of the whole 'we only have home-made food in our house!' thing as a proxy for eating well and healthily because you know what? My mum also only served up home-made food, cooked from scratch, and it barely touched the sides.