Confused

I am in love with two men, married to one and sister in law to the other, yes I know it’s mad, they are brothers, I started dating Andy when I was 21 and we got engaged a year later and married 18 months ago, early in our relationship his brother Richard who was 24 and also had a girlfriend and quite a ladies man made it plain when we were alone that he fancied me, being a little in awe of him I didn’t deter him. One night we had all been out clubbing and went home to their place for the night, Barbara, Rich’s girlfriend said she was tired and went upstairs to bed, Andy was worse for wear and had fallen asleep on the sofa, I must admit I was feeling horny still as on the dance floor Rich had been touching me up all evening, he had put on some soft music and we sat down on the other sofa, Andy was sound asleep and Richard started kissing me and I felt his hand going up my skirt, I must admit I found it scary but exciting at the same time, after a couple of minutes he whispered asking me to take my knickers and tights off, I desperately wanted to but didn’t want to seem too eager and with Andy right there in front of us made a feeble attempt to say I couldn’t, hoping he wouldn’t take no for an answer which as a now horny red blooded male he didn’t, was now trying to pull them down it was all happening so quick I asked him to turn the light off, knowing he was going to be able to go further he jumped up and went over to the light switch, as he did I got up and checking Andy was still asleep I slipped my underwear off, my heart was pounding and my pussy so wet it felt so good to be free of them, we got down to snogging on the sofa and Rich’s fingers frigging my clit, I undid his flies and felt his now massive hard cock, I wondered how it would feel inside me, yes I was now going to let my fiancée’s brother fuck me unprotected, he dropped his trousers and pants lifted my skirt, pushed my legs apart and slid his cock inside me, I was so wet it went straight in, he was so sexed up after a few thrusts he shot a massive load in me as Andy started coming to he pulled out and ran upstairs leaving me spunked up leaking like a waterfall, luckily I managed to grab my underwear and holding against my dripping c**t waddled to the bathroom to clean up, Rich and I have been having regular sex ever since easily if not more than me and Andy, needless to say as I write this I’m pregnant and no idea who the father is but I’m content that as brothers my secret will be safe