Engaged But Unsatisfied

I thought being engaged would mean everything was perfect. My fiancé and I have been together for years, but lately, it feels like something's missing in the bedroom. We talk about our future plans and dreams all the time, but when it comes to intimate moments, there’s a disconnect. He says he’s happy with things as they are, but I can’t help feeling this sense of longing. It’s hard because I love him and we’re planning for our whole lives together, but sometimes I wonder if he’s just not into the idea of sex or maybe he has different desires than me. I’m trying to communicate more openly, but it's tough when everything else seems so good.