need advice please do not judge my lifestyle

my husband and I have been together for over 4yrs. I have always had negative std tests, with the exception of 1 positive HPV test 2 years ago. I have done pap smears twice yearly since and never had am abnormal result after I had a LEEP done to remove precancerous tissue from my cervix. I do believe in polygamy. my husband is aware I am speaking with another man, and I am faithful to both of them in the essence that do not have sex with anyone but them and I am not in a relationship with anyone but them. they have both assured me they are not seeing anyone else, though I would not mind as long as protection is used and they are safe. anyways, a month and a half ago I was diagnosed with TRICH. my husband and I took treatment for it, my boyfriend and I hadn't had sexual contact in a couple months and my DR said it was unlikely he had it. now, I am having symptoms again. I believe i initially got it from using towels after sex, and we just didn't realize that was one of the ways it could be contracted. my boyfriend and i have been together since October and until recently a month and a half ago i have had no symptoms. my question is: how do i tell them that this is going on, mainly the boyfriend because he's always paranoid about this stuff? I am scared that the boyfriend is going to freak out which I completely understand why he would. my husband is understanding. I do not want harsh words or judgement. this is my lifestyle and though I understand people are not ok with it, I did not want criticism. all parties are consenting adults and all know of each other. I am NOT cheating!