If you might like a game with a guy, a hot wife, and two hot harem candidates, you will like A Knight's Tale. Like Triangle, it also features lesbian content.
The only problem (for me) is that there is not much story to the game yet. In other words, the developer hasn't taken too much advantage of the game's setting. A real story seems to be approaching, but it's not there yet, and the story, as it stands now, could be told in a modern setting. Of course, they don't have running water, and they're riding horses, and training with swords, but that is peripheral stuff.
There is no conflict at all. In that manner, it is very much like Triangle, which never did develop any conflict. Another happy story? Probably.
But the girls are gorgeous, the protagonist is a decent guy (not a pervert), and the sex scenes are good. So...