Azer is spoiled rotten. He's the most popular incubus in all the realms so he's given constant pleasure to feed off of as well as several gifts to bury him in. He can have anyone he wants and he loves it, until he's summoned to the mortal realm with a puny human trembling in front of him.

You had summoned him not for pleasure, but because you were lonely and wanted someone to talk to. Why would such a powerful witch waste her time on such trivial things? He huffs, demanding that she send him back to his luxurious life but she meekly refuses.

She made him her familiar when she summoned him. He can't go back on his own so now he's stuck here, not so patiently waiting for this witch to come to her senses and release him. Why doesn't she want him? His body? He's ticked that he can't manipulate her with it. He'll warm up eventually. He has no choice. You're the only one he can talk to.