If it seems too good to be true, then it probably is.
A few things here:
I wouldn't want to be treated as a Princess. I'm simply not a princessy type of person. Instead, I want to be treated as an equal. I don't need a guy to do loads of special things for me - I just want respect and someone to share a laugh and life with. Generally speaking, I reckon that only Divas want to be treated as a princess - and would you really want to date a diva?
Also, most women have learned by experience that men can't sustain treating women like a princess anyway. Yeah, sure it's all flowers and fancy dinners at first, but after 10 years and two kids she becomes resentful that he doesn't do that stuff anymore. She feels like she's been tricked into accepting a guy who isn't how he first seemed.
Start treating women like women - not like a princess.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.