Do you think when Leia kissed Luke in ESB, she did it to make Han jealous?

I always thought so

Well, maybe. she had always considered luke a brother, but i think it is mais likely that she kissed luke to discourage han from pursuing her rather than to make him jealous.

of course she did, its quite obvious, and thats the generally conclusion most people agree upon as to why she did so. You can see it in her eyes right before she does it.

Yes, and to show him that his cockiness wouldn't be tolerated.

Yes she knew it would bother him.