Anyone else lost friends due to simping?

I don't mean that they just focus on their relationship. I mean they warp their entire persona and beliefs... and then blatantly treat you as secondary to the point they just use you.

And when the relationship inevitably fails they come crying back complaining about their ex and pretending they didn't adopt all of their belief system to get laid and ignore / use you, and treat you like shit. And try to make you their therapist, just to end up repeating the same thing as soon as they're in a new relationship.

I know some people talk about it but I feel it's understated, especially in our generation where this is seemingly more extreme than the older generations.

I've lost a few friends to this in my 30's that I never would have imagined it came down to this point or they would stoop that low.