So almost two weeks ago a 2-some turned into a 3-some as the 'old' bf re-entered a relationship that I started with this girl. It's MMF. So far there's been pretty good communication between all of us, both myself and the other guy have discussed basically that we understand when the other is working or has other commitments that we understand the other will be having sex regardless. The female companion is totally ok with the arrangement (obviously, and she recognizes that she's luck to have found 2 guts willing to at least try this out). There ate definitely moments of jealousy between the two of us guys, but we also talk about how we're feeling about what's happening. All 3 of us became friends individually before the three-way relationship began and I think that's helped in that we all know that we can basically trust each other when we need to talk, but there are times when, for example one of us guys has more time off then the other and jealousy sets in, but I think if we can continue to talk as we have been, things could continue to work. What I've noticed is that as long as the two of us guys are able to discuss whatever is troubling us at the moment, things actually go alright. It's when communication between us guys breaks down that the three if us have difficulties. Also the female partner struggles in dealing with both of us being jealous at times. In talking with friends none think that it'll last, but we're all progressive thinkers and are all working to try and make this work. The biggest issue is at times the two of us males do feel like we are competing for attention. That's where each of us have work to do in acknowledging that we each get attention at different times.