It's interesting to me the language you use, MsJelloFluff. I didn't "decide" on whether my T cared or come to a "conclusion." That sounds so rational and deliberate. For me it was much more of an emotional knowing than a conscious and deliberate thought process. What did I feel? What did my unconscious know? It was much deeper than an A-B-C thought process. Would it be helpful to look within for the answer instead of weighing the external evidence?
I don't believe my T has ever said these exact words, "I care about you." But he has said, "our relationship is beautiful," "we are intimate," "we are so connected," "I love spending time with you," "our relationship is phenomenal," "you are so dear to me," and my favorite, "I hold you in my heart," said while clasping one fist in the other and holding them to his heart. Plus he has helped me so much, his eyes communicate warmth and love, and he wants to help me heal. I guess it all adds up to "I care about you." But in my heart I knew that without this recitation of evidence. But we're all different, Jello. If a list might help you, could you look back on your experiences with T and start making one? I have a feeling your list will be very convincing!