i had the same problem,my boyfrind used to for 1 and half years kiss me ,sleepver many nights,hold my hand and spend a lt of time but things changed slowly and he never even took my hand once a week,he used to sleepover regularly on weekends but even that for the last few months only when i asked him to come he would..i found it really srange and i was hurt..i know you cant be mushy all the time..but not even a small peck

,even when he came over weekends,he never tried to kiss me on my cheek or anythin

it was sad...im not sure why..i guess he lost interest or something