Rubber Band Tits

I put rubber bands tight around the base of my wifes C's last night. Then I played with them flicking the hard nipples, pinching them, slapping them. She loved it and I did too. But she wanted them off, after probably 10 minutes it was hurting her. It was hard to get the bands off but when I did, her tits were super bruised. This morning they were still very bruised and swollen. She normally wears blouses which have a button or two open at the top. Today it's sweater, no way for anyone to see.

I can't believe they were so bruised after so short a time. I didn't realize that would be that strong in reaction. Not sure what to do, we both loved it, she said we'll have to try again after everything returns to normal