if you ascend, you will get cucked
It makes me wonder, if I accept this as inevitable, maybe I should just accept it as the cost of doing business and treat any potential GF like she's already cheating on me?
IE not do lots of stuff for her or pander to her like I would a pure virgin loyal wife in a perfect world.
Basically treat her equitably. If this causes her to leave, then she was never here for me, she was just here to get pampered.
In fact LESS than equitably. Since we need to assume she's out ogling (if not fucking) Chad on the regular, she has to compensate for this by treating us extra-good, like giving regular blowjobs, making meals, etc. In exchange, she gets cuddles and the benefit of having a man present, which just naturally makes her feel better for personal security.
It would be our own version of a shit test. Most women wouldn't put up with this unless it's Chad, and they will leave, in which case you haven't lost anything, as it was never there.