In the future, when you don't want to roleplay with someone, just say no.
Don't just leave them hanging and asking if you still wanted to or not.

In two cases, it's happened to me. I've asked (namecurrentlycensored1) and (namecurrentlycensored2) if they wanted to RP.
In the end however, didn't even reply to my PMs and when I ask if they did, instant ignore.

They seriously could've just said no, ya know?

EDIT : The worse part is that they're RPing with everyone else just fine, it's not like they have social problems or anything.