Horny Unicorn Girl Inviting You to Fuck Her Donut (Patreon)

When you found out your girlfriend was a unicorn you were elated. You had her show you her unicorn form. Then you asked her if she could stop halfway.

"What do you mean? Like half-unicorn, half human?" she asked. "I mean. I think so. I've never tried it. Wouldn't it be kind of disturbing?"

Once she did it though, you fell in love even more. After some experimenting with ratios, this is the form she takes now when you two get intimate.