Have an opinion?
Depends on what the context is, and what the plan is. I'd be wary though regardless, and if you don't have feelings for him, make sure to bring it up if you're getting a vibe that he does indeed want more.
Is he taking you to dinner, or to the movies, or dancing, or a concert, or anything else?
Hasn't "fallen" but is interested
You cannot undo this action. The opinion owner is going to be notified and earn 7 XPER points.