One day I gave her some gift & agreed to have anal as I wished.I put some oil on her ass hole & applied oil on my penis.I told her that you may feel pain & so have to tolerate. she agreed but asked to penetrate half only.After pentrating half I asked if she need more. She kept mum . Then I gave a jerk & whole penis was inside her. she cried loudly.But from next day she always said of irritation & needed half penetration.Afterward I did complete penetration extremely rare.