How does FSF act with his other female co-stars?

FSF is known to have many close female friends in showbiz such as Ady An whom he collaborated with four times. Is there a difference in body language that he depicts with these female co-stars and YM?

Here are some comparison photos. Even though these photos don't say much and do not prove that FengMi are actually dating, but at least the comparison shows how comfortable FengMi are with each other. Let's just say comfortable enough for FSF to used YM's sweaty used tissue. okay...that sounded sorta gross...which was not my intention...

I think YM refused to take these photos at first because she didn't put on any makeup. FSF whispered something in her ear and she ended up borrowing FSF's sunglasses to wear and took the photo on the right and then they both wore their own sunglasses to take the middle photo.

FSF with Ady An and Joe Chen

Note: it's odd how YM just gently rested her wrist and not her hand on her female assistants, but she naturally put her hand on FSF's arm?

Based on what I observed, FSF has always been and is known to be very gentlemanly. With other female colleagues, he's also very considerate...but only to a certain degree. For instance, Ady An and FSF have been close friends longer than YM. At one point, FSF even said that Ady was the person who helped him the most in the entertainment industry (she helped him get in HuaYi Media Corp). But if you observed their interactions, you can still sense a distance in their body language compared YM and him.

At the Symphony of Fate Press Conference

I also remember during Symphony of Fate press conference, FSF rushed to hold YM's hand when she walked down the stage, but failed to assist his other female co-star Guo ZhenNi, who was also wearing high heels . FSF and another female colleague, Xiong Nai Jin (YM's college buddy who's under the same agent as FSF) attended an environmental promotion event. When they had to walk up the stage, FSF waved his hand to allow her to go first but did not assist her up the steps (she was also wearing VERY high heels).