This is my first ever post, and I can totally relate to how you feel about wanting to keep things to yourself. I also want to protect my husband as, like you, don't want either of us to be judged. I have already made up my mind to stay and don't want other people looking at him and making assumptions about who he is. I also don't want people thinking I am weak to stay.
The down side of keeping it to yourself though, is the lack of someone who knows you and genuinely cares about you, being there to listen when you need to talk. I want someone who cares about me to know that some days the smallest thing will reduce me to tears, that I feel insecure, that I hate knowing that in that moment of weakness the man I adore didn't love me enough to say "this isn't right". That's when going it alone is rough.