My partner and I are also in an open relationship. This is relatively new after being together for 17 years (maybe the last two or three). The relationship is really more open on his side than mine. He travels a great deal and I felt that sooner or later there would be an opportunity to cheat on me. My thought was I would rather know than not, so I encouraged it. Truth be told, I get off on it in a wierd way. He has been with, ahem, a large number of men. To my knowledge, he is safe, but we both accept that there could be other STD's and know that. He has also been a participant in the Truvada PreP study our of San Fran for the last two years as well - so by having lots of sex, he is ctonributing back to science (LOL). For the study he gets tested Quarterly and they ask about me and his other sex partners. When we are together, we have unsafe sex and he cums in me - and I like it. Like I said, I kind of get off knowing that he has been with a number of guys (freaky I know). That said, I do know that I am the last person he wants to see in the evening and the first to wake up with and I feel that same way. It's not perfect, but it works for us - for now.