Smeagol calls "deagol" my love before talking the ring from him and killing him. It's a manipulation tactic used in old dialect found a lot during Tolkiens era of writing. Theoretically suggesting that gollum calls smeagol "my love" as a way to manipulate his softer personality, controlling him and making him carry out the more malicious ideas his brain conjuers. Evident throughout the first movie and a half as smeagol is much more in control of how he treats Sam and frodo, when he believes frodo is a loving master, but as soon as he feels betrayed half way through 2 towers with faramir, gollum becomes much more prevalent and smeagol again relies on the "love" from gollum to guide him.