So I had two great interviews on friday, back to back, the first interview I loved the job and all the staff, and they seemed to love me, told me they will get back to me next week, the other interview they offer me the job on the spot and I accepted, told me they will send me documents on Monday, I like both jobs but the first job is what I really want, did I make a mistake by accepting the second job and should I wait to here from the first job before I sign any papers?