Have you learned a truth about your sexual past, that had an influence on your Bi life? For years my wife never told me, for fear I would never be able to handle it. She had discovered that I had sex with another woman, about an hour before her. It wasn't a big deal back then and didn't slow her down. She fessed up that she had let me give her oral, after she had been with her ex,earlier. She was afaid to stop me and allowed me to enjoy her wet & slippery pussy. Since I enjoyed it so much, she let it go and never mentioned it until we had a " no harm/no foul" discussion about our sexual past. Our shared secrets have set us free to openly express and enjoy new and exciting experiences in our later life. Have you learned or shared secrets, that led to a better sex life?
Can't think of any secrets that set me free, but as for the sloppy seconds you refer to I went into that situation, "eyes wide open", the guy had just fucked her, with me watching. She suggested that I fuck her too, I only hesitated for a moment. So, different situation but no secrets.