It's probably actually about the same.

I feel like men in general cheat a lot. Or at least get caught.

thank you

no, i don't think its correct to say that some group is more likely to cheat than another one because someone who wants to cheat will do it nevertheless their sexuality

No, I think straight guys cheat way more because they want to have a girlfriend but also have freedoms to sleep with other women. Gay guys seem to like relationships, and are more open sexually when in relationships, and would probably just ask their partner if they could bring someone else into the bedroom and it would be more accepted than in a straight relationship.