"Hangry moods" playfully refers to moments when hunger-induced irritability or moodiness may have arisen, acknowledging the partner's tolerance in such situations.
"And totally justifiable freak-outs" humorously recognizes that there have been instances where intense emotional reactions were warranted, and the partner stood by supportively.
In essence, this expression expresses gratitude for the partner's unwavering support and understanding during moments of uncertainty, moodiness, or emotional intensity. It celebrates the strength of the relationship and the comfort of being able to be oneself, flaws and all, with a loving and accepting partner.