im sorry im not a male but i hang around them all the time, i love them
and i see no one has answered for you so i will
he liked you at one time and because you said you didnt want anything serious he let it go. men easily change their emotions and often direct them somewhere else now that this has happened its best that you talk to him however since you are no longer intimate he is literally waiting for when you will become intimate again because thats what you had at first thats what he wants now he is not interested in anything more with you sorry thats why he stopped calling for that week
i really hope this helps this is just my opinion you never know some men are different but i can tell you that they ALL HATE CHANGE.