cootagefry,
Dun feel sad, it's js a phase they r gg thru, afterall, u r his mother, he'll come back to the glue stage in future... like my sis, she's very fierce to his 2 sons, even smack them with cane but they still stick to her like superglue, even dun wan to follow their daddy... like my char, she dun stick to me one, whenever someone say go gai-gai, she'll follow then dun wan me liao... sad oso but it's a short relieve afterall... so dun worry...