I think of it (snacks, take-out, etc.) as my husband and me providing for each other. If one of us runs across a candy bar or something that we know the other likes we'll get it for them as a little way of showing that we're thinking of them. No need to spend all our money to show we love each other.

its a debate between me, my partner and his flatmates atm

Absolutely it counts. I'm a feminist but fair is fair. Money spent needs to be halved. I'm frankly a little surprised by the questions.