is this shounen ai or yaoi? It's got both genres listed XD

You could say it's both, because the story is pretty much slow-going in the relationship department (hence the shounen-ai tag). There's only like 1-2 small chapters with sex scenes (that's where the yaoi tag comes in).

Either way, this story is really good and worth the read! :)

okay, thank you for letting me know!! I'll give it a try

It goes back and forth. It's a really great manga! It's not like all sex but an actual pure story. I recommend it ٩(๑❛ᴗ❛๑)۶