"Hey honey, I've been thinking about this for a while and wanted to tell you about us. I feel like we used to have a great connection, but lately I've felt like we're drifting apart. I want to rekindle the spark and enthusiasm we had at the beginning. Can we set up a date to talk about what's going on and how we can work on our relationship together?"

Or, if you're looking for something more casual:

"Hey honey, I miss you! Let's meet up and rekindle that flame we once had 🔥💕"
Let me know if you'd like me to suggest something else!
Why don't you message me on for private messages and other communications and calls?