How do you show consent? You have to keep saying or showing you're okay with what's happening before and during the sexual activity.
Not just once, but every time.
No matter if you're just hooking up for the first time, been going out, or been in a relationship for ages.
And if you change your mind at any time before or during sex, or decide you're not into it anymore, that's totally deadly and okay.
You can stop or slow down at any time.