What does it mean when a guy friend is being too nice?

Anonymous
It was me, my female friend and our guy friend the only thing i paid for was his parking spot. We all got a little drunk before heading to the club then he was taking pictures and he told me if i want it to take a picture with him, i wasn't expecting that. Before that he carried my baggage then open the door for me. Hold the door of the car for us he was being respectful the whole time as well but was being a gentleman as well he wasn't doing any of that with my other female friend. He paid for my parking spot only let me pay $10
For food, he was being very helpful when it came to me. He was also being flirty, i really likes how he was treating me just being a gentleman and very respectful. And i mean this was the third
Time seeing him he did confess back in 2015 he had a crush on me but we went separate ways for
Two years he then start it dating this girl in 2016 but recently broke up last week so he is now single. The second time i seen him, he was flirting, laughing at my jokes, making me laugh we were having a good time, no sex at all, but now the second time it was very different just being very kind helpful respectful flirting with me being a gentleman, etc
What does it mean when a guy friend is being too nice?
2 Opinion