If you were married to MooseShell wouldn’t you at least have some doubts?
Considering the Current Occupant’s own “marriage”, the hostility is well justified. But Michelle is not a marriage partner, so much as she is a controller put in place by the political entity behind the meteoric rise from a rather insignificant race hustler with a mediocre academic record, through several levels far beyond his level of competency. Between Michelle and Valerie Jarrett, The Won is thoroughly P.W.’ed. (That is a “meow”, with a distinctive sound of a cracking whip in the background.)
Hostility is perhaps the least of his emotions.