Boyfriend suddenly compliments me?

Before he was my boyfriend, he would tell me I'm an 8 out of 10, and other little compliments. But since we started dating a little over a month ago, and started getting more physical and intimate with each other (not all the way), he's been calling me beautiful more often, and telling me that I'm hot or sexy. normally he tells me that in a playful and fun way, rather than complete seriousness. Of course I have no problem with the compliments, but I'm just wondering why all of a sudden is he saying this stuff?! He tells me how he loves every part of my face and body, even the parts I'm self conscious about, he tells me it's all beautiful. I guess I'm just curious of his behavior. thank you :)
Boyfriend suddenly compliments me?
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