<human>: Condense the text into a few key points

My fiancé is an amazing man, the love of my life -- but like the title says, it's been a year-long dead bedroom situation. He says he's sorry, but we've talked about it so much I'm just tired of talking about it at this point. I refuse to enter a sexless marriage but I know, aside from this admittedly huge issue, he's the man for me. He's struggled with his confidence in the bedroom in past relationships, so part of me thinks he feels safer avoiding it all together even though we've never had problems. We used to be so close before this, and now I feel like we've stopped moving forward. I know he's still in there...

Should I give him an ultimatum? Seek therapy? All of the above? I'm lost. I don't know what to say that can make him understand how serious this is for me.
<bot>: Fiancé has no sex drive and it's fine with him, but I'm losing my mind and doubting our life together.