I always felt that the DCAU Bat/Cat relationship was not really developed and was somewhat lacking, considering that in the comic world Bruce called Selina the one who always had his heart.
I don't know, she always had his heart until he ended up alone ... with Ace, the great dane??? What was he thinking? He should have given Selina a ring as soon as he had the heart attack and had hung up the cowl. At least he told Terry about her when he brought up the subject of falling for someone and later catching her red-handed. I kind of love/hate the doomed tragic thing they had in the AU.