I think it's important to remember that just because you're mutuals with someone it doesn't guarantee play or flirting. It's okay to just like and reblog things. And it's okay just to like their blog and not the person and of course just like the person and not their blog.
I've had so many people reach out after we've followed each other flirt or shoot their shot right away thinking that just because we've followed each other it means we're going to exchange pics or rp or whatever, but sometimes it's a simple matter of just liking someone's content or presence in an online space.
At the end of the day it's all about consent, and remembering there's a real person on the other side of the blog you've followed who more than likely wouldn't appreciate being approached in person with the things you're bombarding them with in their dms.