Kinked Gays

I have a question. I’m a gay man in a relationship and we’re both really happy since we met a year ago. We’re “open” in the sense that he wants the option to be intimate with someone else if a connection happens and in turn he said he would be supportive of me being involved in my kinks. But I haven’t done anything yet out of fear. I’m not afraid of my kinks. I’m worried that if I ask to go do something kinky it will ruin our relationship. I don’t think he was bluffing when he said it was okay for me to explore my kinks with other guys but it worries me. I tend to repress the kink part of my sexuality and I’m worried that him knowing I want to act on it will cause issues. My boyfriend and I are so...