How do you live with someone who has alexithymia?

You have to be very very patient being with a alexithymic person. You should have no expectation of any understanding of emotional cues shown by you and a response in return. You should understand that the person is not doing deliberately, that person doesn't have developed cognitive capabilities for judging and reciprocating emotions (including their own) . You have to shower that person with love all the time unconditionally and have to be persistent despite all the cold shoulder you may receive . My gf had this condition and I came to know after we got into relationship . I initially thought she is a closed and emotional person . But later realised she is cold and brutal. She couldn't understand and reciprocate emotions like love, care etc at all... But still I gave it my best shot tried to make her realise what love is. She eventually understood it but couldn't feel it.