Pain + pleasure + pain again

It was very mean. I’m actually not so easy open for sexual things. But the Master always makes me really enjoy myself and get involved in completely unreasonable sex things. I ended up completely sweating in latex and tied up. My hands behind my back and a tight collar. I was very tense, scared and horny at the same time. and then… spank! A slap in the face. That’s how it started… I was torn between pleasure and pain. I enjoyed every second. Especially my nipples hurt hard while the master penetrated my vagina with the metal dildo and satisfied me really hard.