I had sex with my masseuse sister

My 25 year old sister works as a masseuse at one of the big saunas in town, she's a real looker, with a body to die for, long dark hair big tits and legs right up to her arse, most of my mates just drool over her when they see her, and to be honest I had often jerked off thinking about fucking her myself.
one day last week i thought I'm going to have her so i called the sauna and booked a shower and massage with her , not using my proper name , i went to the sauna and was greeted by a really good looking receptionist who took my cash and showed me into the massage room handed me a couple of towels and told me to take a shower and sue would be with me shortly , i took my shower dried off and lay face down on the massage table , wondering what her reaction would be when she saw it was her big brother laying here waiting for her , after about ten minutes the door opened and in she came , not being able to see who was on the massage table she said hi good evening I'm sue how are you today , her face was a picture as i turned over and she saw her brother lying there naked with a hard on , oh my god what are you doing here she asked , and i said ive come for a massage off my little sis , she said i cant do it ill get you one of the other girls to do you , i said no , it's you i want and i have for a long time , since you were about sixteen actually , when we lived with mom and dad i used to jerk off with your panties , and she then admitted that she had seen me jerking off in my bedroom one evening when i had left my door a jar and that she had seen me shoot my load . Then she said we'll you look keen as she looked at my hard cock, and then said if we do this, no one can know. Lie on your stomach ill do your back first, i rolled over and she poured oil on my back and began to massage, she moved her hands all over my back from my shoulders down to my arse, she moved down to my thighs, and each time her oily hands were at the top she lightly brushed her finger tips over my balls, it felt so good.
When she had done with my back i heard a zip being u done and when she told me to turn over she had removed her uniform and was stood there in her undies , a white half cup lacy bra that lifted her tits and pushed them together a pair of white lacy panties that already were showing a wet patch , white suspenders and black stockings , and she said now for the front , i asked her to take off her panties and give them to me which she did , and as she oiled and massaged my front I sucked on her panties , she tasted so good , when she had finished the massage she said would sir like anything else , i sat up and told her to get her tits out so she took off the bra , her tits were big and firm , her nipples already hard , i pulled her to a took one nipple in my mouth and sucked on it and teased it with my tongue , i reached down between her legs , her neatly trimmed pussy was soaking , she parted her legs and i slipped a finger in , then two fingers and she moaned softly , i fingered her and sucked on her tits till she orgasmed , her juices ran all over my hand and dow my arm , i took my fingers out of her and licked them clean , i stood up and she dropped to her knees and started to suck my cock , her warm silky lips felt amazing as they slid along my shaft , her tongue rolling around the head , it wast to long before i was pumping stream after stream of hot cum down her throat , she was loving it , when she stood up i bent her over the end of the massage couch and knealt behind her , i parted her arse cheeks and licked her tight arseole before burying my tongue deep in her pussy , i lapped at her pussy and drank her juices , they tasted so good , i tongue fucked her whole and clapped at her clit till she orgasmed again , i stood up and slammed my cock into her from behind , she was loving it , every time i slammed into her she pushed back onto me , i fucked her long and hard till we both cum , i filled her hot pussy with my seed , and she sucked every last drop of our juices from my cock .
Afterwards, we took a shower together, we dressed, and I left. Later that evening, she rang me and suggested I should have at least one massage a week, but at her flat, not the sauna, who am I to refuse?