I had the same problem with a guy I dated for 4 years. Constant recurring BV every time we had sex. We broke up for 3 years. I seen 2 other guys in that time span and never had a problem. Now I'm back with the EX and I'm having the same problem again, 3 years later. So I know it's him and we have gone to different doctors for answers and no help...Keep being told it's not possible that he is giving it to me. Well something is wrong because it's just him. And me for him because no other female he has been with have had this problem.