I'm not gay, I've fallen in love with her unfortunately and if there's anyone I'd want to marry and have babies with - it's her
You could have answered her: "Let's go to my house and let me touch ur boobs there!"
Also, this is kind weird... A women who said that in a party. Point 1: Did you ever think about yourself touching her boobs on a public place? What about her, haven't you ever questioned why a woman allow that kind of publicly behavior?
Trying to help you understand the whole situation. If you see a woman in a party having their boobs touched by a guy... what would you think about? What is she trying to prove or validate allowing that?
Another question: Why you felt in love with her? Can you describe me the qualities you saw in her? What behaviors make her a good potential mother for your sons?
If you can't answer that with clarity, you probably felt in love/attached with your sexual desire for her. Whenever you fck her enough... you will get tired and the dream is over.