SAN FRANCISCO: Last week, Shah Rukh Khan and Kajol joined Karan Johar in San Francisco for nearly two months of non-stop shooting for My Name Is Khan. It is the longest-ever shooting stint away from home for Kajol and especially tough on her husband who is unlikely to visit her in the US during the long shooting.

Says a source, "Ajay is not the kind of guy who can hang around his partner's sets. If it was another unit, perhaps Ajay would've considered visiting his wife, but not Karan Johar and Shah Rukh Khan. Though outwardly, Ajay is normal with them, there's actually no love lost between him and the Khan-Johar team. He would never be seen anywhere near their shooting even if it means being away from his wife and daughter for months."

Staying away from his daughter for almost two months is especially hard on Ajay. Considering the long absence from Mumbai, earlier this week Kajol flew down with her daughter to join her husband in Goa where he's shooting. She flies to San Francisco with Shah Rukh on Thursday, for one of the toughest shooting schedules ever.