I work in an open plan office. There is a manager there who manages the team that sit directly opposite us. He is a confident, extrovert guy and is friendly to everyone. Bit of a flirt but harmlessly. He flirts with any female under the age of 35 who he finds reasonably attractive. He's a single guy so there's no harm in it. Everyone just accepts him as a bit of a charmer.
He likes to be around me. He will pull a chair up and chat to me throughout the day and will always stand up for me so he must like my company. If there are other people around he always chooses the desk nearest me so we an talk. But this is where it gets a bit weird.
He keeps pretending to forget my name and who he is meeting with (when he has a meeting with me). I know he knows it but makes out he cant remember my Surname when I can see it's written perfectly in his Diary on his desk. He's known me a year, we all know he knows my name.
He comments on how hot other staff members are but if anyone says I'm attractive he says 'she's alright'. He avoids being alone with me and although he's chatty when others are around he doesn't talk if it's just me and him.
Recently there are many times when we have to be alone due to others being out of the building and he's started going down to the other floor when that happens and it's making me a bit uncomfortable. It's quite an extreme reaction to being alone with me!! It's making me worried and self conscious. It's literally every single time we are alone together and he doesn't do that with any other work colleague. I'm really worried I've done something wrong somehow but don't want to make a fuss incase it's nothing. He is still very chatty when other are around. I have only ever acted professionally around him.
Is this normal for work colleagues to not want to be around younger female colleagues? This is my first professional job so I'm not used to office etiquette.