<human>: Me and my girlfriend broke up around a month and a half ago though we still keep in contact. We've actually had sex a couple of times ...in situations where we were alone, it kinda just happened even though we both knew it wasn't a good idea. Anyway why is the thought of me having sex with another woman perfectly okay for me to comprehend BUT the thought of her having sex with someone (even meaningless sex with a stranger) is devastating and gut-wrenching? How do I fix this double standard? 

Is it just a consequence of still being in love with her? Even though I don't think I am? Or am I just being insecure? Do I need to just cut contact completely?

Can you summarize the given text in a few sentences?
<bot>: Have a major problem thinking about my exgf having sex with someone even though I am fine with myself sleeping around and am even seeking it out with a former fwb. How do I fix this?