Let’s say she does cheat, and that’s the worse case scenario. Okay. So then what? You break up with her? Okay. Now what? Do you feel you are capable of attracting a woman who is as attractive or more attractive than her? One of equal value?
Let’s say you say NO, YOU CANNOT GO. I FORBID IT. What is the worse case scenario here? That’s an entirely different worst-case scenario for this outcome. Sometimes, trying to limit them from say going to a dance class or going on a trip, etc can send the message “PLEASE DONT TALK TO OTHER MEN. IM INSECURE YOULL LEAVE ME FOR THEM.” which sends the message “IM LOW VALUE” is the solid equivalent of failing a shit-test which will result in them leaving – ironically.
What’s the best case scenario to you saying no? Probably she respects your decision and does not go, feeling no ill will towards you over giving up something she’s always looked forward to.
What’s the best case scenario for letting her go? She’s loyal, doesn’t cheat and just enjoys the culture, music, food, sights, sounds but not men/dick/other things available.
Now, what’s the odds of good outcomes a/b and bad outcomes of a/b? Based upon that, what statistically/logically, is your best bet? Great. Now what does your emotions tell you is your best bet for keeping the relationship strong and going? Do they align or disagree? If they disagree, why does your emotional-calculus create a different result than your intellectual calculus? Are your emotions accurate or clouding your judgement? Is it objectively true more so what you are intellectually expecting to occur or emotionally afraid will occur?
Now, given that soul-searching, make an informed decision aware of whatever your personal insecurities you are bringing to the table are…and…uhh good luck! Wish you all the best and the decision you make works out in your favour.