Hmm . I don ' t think he ' s embarrassed of you if he invited you and had happily met your parents . Maybe one of his parents is a grumpy , politically incorrect , miserable sod . So , if his brothers are not there to ensure great conversation and good vibes throughout , he might be concerned that you won ' t like his family as much as he likes yours . My mum is mentally ill and all my exes have heavily disliked her . This is because they have only met her briefly and do not understand her condition and obviously don ' t know what an amazing person she really is . Hahah , but my mum never likes them either , so ehhh , I always get to hear a lot of shit about the other from both parties . It is so tedious and unpleasant . So much so , in the future my SO will only meet my mum other than skyping if we ' re engaged . Just thought I ' d share my story as a possibility . Edit sentence structure , spelling