hello my name is amber and i am 18

I went to the fair like 2 Fridays ago...with my best friend jan,a guys named shawn that i have been friends with for about 3 years,and another guy named shawn that i have known 1 day before i went to the fair with them.we will call both the shawns lil shawn and big shawn.....oh and by the way the night we go to the fair was the first time that jan had meet lil shawn....anywho...we go to the fair big shawn is pretty much all over me...and im lovin it!! lil shawn is hangin over jan...and she doesn't like it...at all! well i don't know how it happened but jan ended up leavin the fair and she went home. me,lil shawn, and big shawn we stayed at the fair till it closed.  when  we left we went back to there house...they live together...i slep in the bed with big shawn...and i promise to everybody that reads this...i did not have sex with him... anyways...my ex boyfriend that i dated for 10 1\2 months lives with them also! we just broke up a few months ago...its great becouse i am all flirtin with his best friends right in front of him and he can't do anything but walk off to his room. anyways...i stayed the night at there house and slep in big shawns bed with him. the next night..don't ask me how this happened.but i was havin sex in there living room on there couch with "lil shawn"!and me ex walks in and is just starin at me. whats funny about the whole thing is that we didn't even miss a beat. it was great. well now i have known lil shawn for about 2 weeks. he asked me if i wanted to be with him i said no becouse i am 18 and im single...can't beat that!i told him that i just wanted to be friends with benifits.he said ok thats fine with me. he told me that he didn't care if i went off with my friends and partyed and shit as long as if i was gonna be gone all night and not come home that i was to call him and let him know..what?..we aren't together.why should i check in with you.."daddy" anyways.. i don't know what to do i have already told him that i didn't want to be with him but i guess he doesn't get it? what should i do. if you can help please write me!