I have looked through the Angels of Love book by Zanna Blaise and also the recent Modern Dating book by Henry Archer. It doesn’t seem like either of these books have any ritual specifically geared for bringing just one person who is good for a long term relationship. They all seem to focus on specific people you already know, or rituals than enhance others’ attraction towards you etc.
I’d prefer a ritual that works with demons/angels as opposed to chaos magick.
angelic magick I would go with Damon Brands Magickal seduction it seems to ouse the power for finding someone. There are 3 rituals in it 1 for a quicky for and with anyone local who is in the mood 2nd to move along a relationship that is sort of underway and needs a push in the right direction. And the 3rd to find the right person you really want to be with.
it worked really quickly for me and a friend of mine even though both of us just read it because it was an interesting magick book. Happy Magick