It’s said they can get jealous, and the energy between them and human partners can cause problems, or they can feel taken advantage of and neglected.
There is a member ere called @succupedia who posted a lot about succubi being married to one, so you might like to browse through the Love and Sex Magick category if the forum and learn other people’s experiences in this vein, like this one:
They’re not easier than or stop gaps for human partners, if you wanted a succubus thinking that, then stop, get a human partner and have done with it. These guys are immortal and take relationships seriously, even if they are feeding off you while doing it.