Search Results: having sex right away

For the past few years, I was in a relationship with this Mormon girl, and we had a pretty good relationship. We'd have difficulties when she'd doubt our relationship because I wasn't Mormon, but we made it work.
But she had decided to do a mission, and I asked her to marry me. She said she'd say yes when she came home, but she started to push me away. She said she couldn't marry me now because she went through the temple, and she'd stop saying she loved me. She also asked me to see other girls once she left.
I walked out of her place one night because she was making it so hard on me. Later that night, my ex messaged me asking if I'd like to come over and have sex again because she was going to move away soon.
Despite all the issues I was having, I told her I couldn't because I still felt it'd be cheating on my girlfriend, despite everything going on.

Should I have done something with her? Or did I do the right thing?

I always wondered why so many women here in my town rarely show interest or even pay attention to me. nevertheless whenever I go to NY (which is three hours away from where I live) to visit my family members I suddenly start climbing up the top of the hierarchy in autopilot. when I go to the caribbean it gets even better.

it wasn't until a while back at a family get-together I heard my older brother say that this is because the vast majority of women feel more comfortable exposing their freaky side to men outside their area because they obviously will not be seeing these men for long and if they feel like gossiping it won't be with other people in her area.

till then was my brother right? and if so how terrified are you of having your sex life exposed?