My Angry Sister

I live with older sister 31 single and I'm 28, she was out on a date I was home. Having not long finished work, having a snack and my sister came home angry she broken up with boyfriend. Over what I wasn't concerned, I let her vent her anger and when she said she was really horny and was looking forward to sex tonight. A lifelong smartass I told her to drop her pants and panties and I'll fuck you. Waiting for her say something to me, I was shocked when she did as I had asked her to do. I got a hard-on shortly after and fucked her on the kitchen table, after the fuck I was going to shower go to bed. She showered with me and had me join her in her bed. Next day I waited for her to realize what we had done, thinking she was drunk or something similar. She hadn't been and thanked me for the sex. I was happy she was happy and said anytime Sis. She took me at my word and has me in her bed regularly. I come home from working late there will a note saying join me tonight and I do. My own sex life was a bit sparse as I worked odd hours. But it has risen quite bit now my horny sister lets fuck her.