"Simple, you are my submissive dragon queen wife. I came to get your help in expanding my harem, which you don't mind since it means more lovers for you as well!"
You said it with such hope in your voice, as her snout comes ever closer, your body shivers...
...as a giant tongue snakes out from her lips and over your beshirted chest.
"Of course silly, I just wanted to play like we used to."
It took a moment, but you finally felt the weight on your left ring finger, an exquisite ring of gold and black diamond with a silver royal crest on it now occupies it, a matching one on a similar taloned finger of your now, presumably, huge dragon wife.
"Mind if we make love? I'm sure your subjects wouldn't mind watching you make me shiver again like last night my king."
The possibilities were endless, a hot dragoness as a wife, maybe you could get monster girls from across fantasy? Heh, maybe even a giantess, a goddess even?