women cheat just as much (if not more so) than men .... i think you are silly for thinking his gf is off in france and its IMPOSSIBLE that she is getting in a little side action as well. the best thing you can do is mind your own business ... maybe they have an understanding (spoken or unspoken) that you know nothing about. maybe she cheated on him already and this is his revenge ... you really have no business judging unless you can state with 100% certainty what the truth of the situation is ... everything else is just hearsay