These days lots of girls her age are dating guys in their late teens to early 20s. Women are becoming "cougars" at an unprecedented rate.
Also I guarantee that girl would think a 35 year old guy would be a "creepy old man" if he hit on her despite being much closer to his age than her bf's.
Also most of the guys I knew that got cheated on were cucked by a YOUNGER guy.
Imagine being a 30 year old boomer with a 30+ year old wife/gf, wageslaving long hours to provide for her, only to come home early one night to a 6'3, 19 year old pretty boy Chad zoomer in bed with your wife, scrambling to put his Fortnite t shirt back on.
This is all life fuel for zoomers who are at least decent looking but suicide fuel for all men over 30.