Coming out to a SO has to be one of the toughest decisions a CDer ever makes. The emotions, the potential stress on a relationship, etc. What finally made you brave enough to tell and be willing to deal with all that might have follow??
For me it was the urge/need to shave my legs. You can hide a lot from a SO, but it is tough to hide hair-free legs (at least mine). When I took that step, I knew I had to be willing to reveal my other side. I thought the marriage was strong enough to get through it and luckily I was correct.