I'm going to 'lead' a girl on
What do you mean by lead a girl on?
I want to make her like me and dump her for kicks.
It is wrong to lead people on and hurt their feelings. You should find a new hobby so you don't mess with other peoples lives.
It's no big deal. I always do it.
It is a big deal to a girl you are leading on. Do you not care about her feelings? She would be devastated.