Pleaaaseeee help me!! :(?

Okayy i kno this isnt very nice but sometime i have to set my boyfriends up on test just to see if they r real or not so the boyfriend im with is soo amazing we get along great were so much alike but one day i decided to make a fake facebook and add pictures of this really pretty girl and i added him and started texting him off my friends phone well i made her start talking ual to him and he kinda went with it he asked if she would have a three sum and stuff well then she said she wanted to hook uo with him first so its not akward then he asked "so you wanna have and not tell any one?" and she said yeah and he was asking her personal ual questions and he told her how big he was and stuff then when i caught him in it he said he was only askin her questions about a threesum but he knows i wouldnt let him do anything with her so i guess i dont get why he would tel her half the stuff he did. but the down side to all this i may be pregnant..:/ i need help what should i dooo!!