<human>: I've been dating a girl for the last month and I'm reaching out to my fellow redditors because I want to break up with her and I don't know how to do it without losing her as a friend!

We met a couple of months ago through a mutual acquaintance, and soon after, she became an regular member of our group of friends. During the friendship, I broke up with my girlfriend of three years. A short time later, she also broke up with her boyfriend of two years. Literally, the moment she became single, she began trying to seduce me. Being in my weak state of mind, and horny, I let it happen. 

I needed a rebound, and conveniently, she was there. I didn't think it would snowball into something serious. I mistakenly walked right into another relationship with someone I totally don't envision being with.

Fast forward to today. She is completely obsessed with me. She constantly brings up the subject of moving in with me already and our life in the future together. She also has an annoying habit of showing up at my house uninvited and deciding to sleep over. Meanwhile, I can't even get an erection in bed anymore as I am completely turned off by her now. 

This decline in my sexual attraction to her really woke me up and has really put things into perspective. Basically, I followed along because I wanted to get laid, and now, I'm regretting every second of it.

What's the best way to break up with her while causing the least amount of collateral damage between us, and the friends we share?

Can you condense the text into a few key points?
<bot>: Broke up with my ex, was horny, walked into another relationship and now I want out but I don't know how!