New to DD/lg Play

Met my partner online, been together two years. Started exploring D/s last month. First time, he tied me up in our basement, blindfolded. He told me I was his little girl and spanked my ass hard. It felt so wrong but right at the same moment. Felt like submitting to him made everything between us more intense, physical rush when he pushed limits. We’ve been going deeper each session. Wonder why this turns me on so much.