I slept with my crush's bff only to try to make her jealous.
Why would you sleep with someone only to make your crush jealous?
I just want them to pay attention to me.
Trying so hard to make someone jealous is obnoxious. If you want someone to pay attention to you prove that you're worth it.
Why is everyone so obsessed with such a simple action. It's not a big deal.
In fact your action is repulsive. You definitely will get your crush's attention but in a negative way. I'm sure they will not appreciate it.