moments after sex.

I think he waits till he does the ghusal and till then tends to do nothing.

or

praying in his heart... he got her pregnant this time

or

has aids std's) and feels guilty that he got her aids too

or

he is worried that he didnt do good on bed.

or

misses his X after sex coz she was better....

or

MAY BE HE IS RITEEEEEEE... it cud be his natural reaction !!!

given that we are raised with values that put sex into very bad light, i think he might be having some psychological issues in that respect. he might be thinking he is doing something bad.

That can be true given that it is a taboo for people to discuss sex even for educational purposes.