Partnered straight men and feet

So it has happened to me quite a few times that I get approached by these guys, in relationships (not open btw) and wanting to meet for feet fun and stuff on grindr…. Like I get it, is hard to have that fetish if you’re straight but like is it really necessary to cheat your partner like that? I always found it disgusting. If you believe your girlfriend won’t accept you for who you truly are…. Is she really the person you wanna be with?

I know some people may disagree with me in this but I personally would never partake in cheating, and I will not contribute to it in any way. What do you guys think?