I can confirm that a tub big enough does exist. My mum has one. But the spa jets are old and broken and leak, so I can only fill it this high.
So you can cuddle, but are only immersed up to your hips, which makes a photo of me and my girl in it a wee bit NSFW. (The bubbles are from a tiny piece of Unicorn Horn, a Valentine’s Day special bubble bar!)