Person B of your OTP having winter mittens or warm gloves, while Person A doesn't. Person B insists on giving the mittens to Person A, who looks quite chilly without coverings on their hands. However, Person A only takes one glove/mitten, but holds Person B's hand to compensate for warmth.
Eve & Rena are any class you imagine them to be
This takes place somewhere between Magmanta's Cave and Frozen Temple
Eve waited patiently for elf partner to hurry and finish collecting things to keep herself warm from the cold. The Nasod Queen noted that once Rena had finished and walked over to her, that her hands were in her pockets the whole time during the walk to catch up to the others. She didn't think of it until the wind had blown Rena's hair into her face and she brushed it back with a hand, and the Nasod caught it, frowning a little.
"Rena, are you not cold without gloves?"
The elf was caught off guard but recovered quickly, shaking her head, "no, I'm not, don't worry about me" she answered with a soft smile.
Eve frowned more, "but you should be wearing them. I do not want your hands to be frozen as it wouldn't be good if you were unable to fire your bow let alone do other tasks" she insisted, taking one off and starting to take the other off before Rena had taken the one she had took off and put it on, taking one of Eve's hand with the other, still smiling.
"This will do" she replied, and Eve smiled as well, nodding, and the two continued on, Rena humming happily.