BoEF may just be another source, but it's... pointless in most games. Few people like to get sex lives involved with their D&D, especially at that level. There's also a pretty healthy squick element with this one. Ignoring those extra parts (hur hur), I'd call this around LA +3 or +4. Probably more, if you're going by examples from the MM, but I like to pretend that they meant LA to be actually worth levels. The at-will psi-likes do it in.