Emotional Depth: The phrase "mean so much more to me than you'll ever know" suggests that the speaker attaches great emotional significance to these interactions. While they may seem trivial or unimportant on the surface, these conversations hold a special place in the speaker's heart, perhaps because they represent moments of connection and shared experiences.
Underappreciated Affection: The statement also implies that the speaker's affection and appreciation for the other person go beyond what they express. It's a common human experience to sometimes underestimate the impact of our words and actions on others. In this case, the speaker is revealing the depth of their feelings, which may not have been fully conveyed.
Unspoken Sentiment: Sometimes, in relationships, we assume that our partners or friends understand how much they mean to us. However, this statement highlights the importance of explicitly expressing our feelings and not taking any interaction for granted. It's a reminder to communicate openly and honestly with those we care about.