Thawing Permafrost/Heartwarming

Being ultimately a fiction of the romance genre between Dan and Mizore, where would Thawing Permafrost be without its Crowning Moments of Heartwarming?

"Yukari: "...Next time you drop your dummy, I'll call your girlfriend and she can calm you down." Dan: "She's not my girlfriend," he retorted feebly, soothed by his not-girlfriend's embrace, "S'all platonic.""
 * The slow and steady relationship of the two main characters, with numerous examples of both being Cuddle Bugs are needless to say heartwarming moments.
 * Possibly the best example of this being in the Summer Arc,
 * In a completely platonic way, of course.
 * Dan and Mizore's denial of their feelings for each other can be considered quite heartwarming in themselves, especially when they're cuddling while they're doing it - a brilliant example of Everyone Can See It and, quite literally, She Is Not My Girlfriend.