Girl leading me on emotionally

I met a girl recently and she is leading me on.
There will be a party soon and we both got invited.

Just a quick question, what do you guys think, will me kissing a hotter girl than her in front of her, change her way of thinking about me, will i get bigger value in her eyes or will i just become a douche and a stupid guy. Will she reconsider me? What are your thoughts and what do you think her reaction will be?

ps. i have had sex already with this girl before she started leading me on. I dont know what i did wrong, i guess she just isnt that into me.

i, personally, can't condone using other people. so, what you're suggesting here certainly wouldn't add anything to your stature in my eyes.

I is so wrong on so many levels.

Don't use other people. Seriously. It's sick. And don't bother to date girls who likes douches and players. Just try to be a better person yourslelf and become someone who your ideal women would love to have as a husband.

Aaaand If you are just doing it to get laid... sex is dangerous thing. Better to keep it in marriage.