"Guenevere, Queen of the Summer Country" by Rosalind Miles.
I'll just cut and paste the review I wrote for it on Amazon:
The more I read this book, the less I like it. It's an entertaining enough read, if you're not looking for anything even remotely deep and serious. The characters are very shallow. Guenevere wavers between being a strong woman, and a silly, narrow-minded twit. Mostly, she's the silly twit who goes so ballistic at the mere mention of a christian that you halfway expect her head to start spinning around, ala "the exorcist". Oh, and she has visions. Lots of visions. Doom and gloom visions that seem to be there just so she can put her hand to her breast and feel faint and filled with doom and foreboding.
Often times, this book seems to be more of a romance novel in disguise. Guenever loves Arthur. Oh, she loves him. Oh Arthur, oh my love, oh my heart, oh Arthur, Arthur! Arthur, meanwhile, cries a lot. He's always weeping over something, or moping about Merlin. Arthur is perhaps the most shallow character of the lot. There's no depth to him at all, especially later in the book. He starts out promisingly enough, but after Guenevere enters the picture, he turns completely irritating and weepy and..just..blah. Great king? I think not. Someone get the man a box of tissues and some midol.
Also, someone needs to inform the author that there are more color combinations out there than white and gold. Yes, we get it. Everything is white and gold. The dresses? White and gold. The wedding? White and gold. The color of their days? White and gold. The chamber pots? probably white and gold, too. Find another descriptor.
Merlin is a lech who seems to pretty much be a crazy loon who enjoys wreaking havoc, when he's not attempting to hop into bed with much younger and unwilling women. Morgan is so clingy and weepy at the start that it's really irritating..obviously crying a lot runs in the family.
I'm not even halfway through the book yet, and I hope it gets better. It's good enough for some mindless entertainment, but I enjoy books with a little more depth than this..especially when they concern the legend of King Arthur.
Oh, and the phrase "thigh-friendship" really, really gets on my nerves.