Pet name Help, please

Ama

My man and I are definitely adults, and nowhere near teenagers. I have never been good with pet names, even with family and friends. He can be very sweet, and occasionally calls me "sweetheart" or "my love". My awkward self is at a total loss. We're not really "babe or baby" people. One night, I called him "my heart". Any good ideas for sweet nothings?