She banged him. Why else would he be so uncomfortable? Why else would she transform into Rose Quartz, aka the only woman Greg loved? It's obvious he used her for sex but knew it was wrong. Just look up Amethyst x Greg stuff and you'll know what I'm talking about with a certain comic.
why on earth would rebecca sugar go to the extent of making Greg of all characters someone that would take advantage of someone? especially considering that although he has flaws Rebecca wanted to make a good tv dad?
