I wanted clarity, he said 'be at ease'

I’ve been seeing someone for two months now; at first, they were very interested, staying up until three in the morning telling me about their childhood, and really getting me to talk as well. I genuinely thought a connection was formed. Then one day, it was extremely hot, and the next day they turned into someone who just writes “okay.” Naturally, I started doubting myself. Last week, I mentioned that I had made an appointment for therapy for my anxiety, and all of a sudden they said, “I don’t like labels, let’s just go with the flow, don’t analyze things so much.” Honestly, my issue isn’t about declaring a relationship; I just want to know what I’m experiencing as a person, but I’m also afraid of being alone. Plus, a mutual friend from work popped up, and I don’t want a messy breakup.