depends on the gf.
Ann: prolly not, unless ren begged her to cuck him
Makoto: same as ann lol
Sumi: i can see her thinking hes cute but being too nervous to ask for that kinda thing
Futaba: no unless he acts like a ntr villain
Haru: is open to it but wouldn't act on it, its just a dirty fantasy she has
im not listing other p5 love interests