Was away earlier in the week so forgot to post in here. I know phil slept with shirley after he found out about sharon and was vulnerable, but i do believe he was genuine with shirley. it just so happened he was vulnerable and couldnt fight his feelings. He was right she was there, but that doesnt mean he didnt have feelings for her. if he really meant what he said, why would he tell her that if he wanted to keep her in line so he could use her again. It didnt make any sense.
He has told shirley everything, she knows everything what he is doing and she knew he was hurt over sharon. I don't believe the current producer would make shirley out to be this much of an idiot, she's not stupid. she's never been that over Phil, she always had doubts about him being genuine, why would now after he found out about sharon be any different.
You could tell after shirley left that he was hurt by her drop dead comment, add to the fact that he tells her everything with no question other than just being close, he told her he couldnt trust her in tuesdays ep but he still told her about marcus & dennis. He was going to tell sharon about knowing but shirley stopped him.
he knew sharon was angry with him cos he told shirley it was down to dennis. this is another reason why i think hes in denial cos he wanted to find reasons why sharon wouldnt do this.