Please no hate, I already know of all the risks and absolutely do not want to jeopardize our friendship or my marriage. Both are extremely solid and based on foundations of mutual respect, honesty, open communication, and vulnerability. I truly think both relationships could weather anything, and they both feel the same

I'm bisexual and married to a man whom I'm so happy with and am SO attracted to, and he seems like he's open to the idea of me and my best friend exploring things. I'm having pretty intense feelings for her and I'm almost certain she feels the same. These feelings have developed after many years of such a beautiful friendship.

However, recently these feelings have turned more romantic/crush-y, though they're still very sexual too. I'm just wondering if we do have such good relationships if opening our marriage so she and I could also be together could be successful? Like maybe she could be my girlfriend? Idk. Maybe it's a pipe dream but I can't stop thinking about it. I feel guilty but also it feels right. Help!!!