Long-distance. Is it a romance fantasy?

Hello, I've been talking to this man from Greece for a year now. We've met online and we both like each other and planning to see each other in Christmas since he's coming to the US to see me. This man is sweet, kind and respectful, sometimes too good to be true. He showers me with gifts, during my birthday, or even when I'm not feeling good. As an American with a past of getting cheated on, my friends tell me that I'm over romantacising him and should be careful with European men, especially Greeks, since they are womanizers and see Americans as an easy target for sex, and that they can make good lovers but not boyfriends, eventually leave and start looking for someone new when the honeymoon phase ends. And this is freaking me out! The thing is, he sometimes acts like my boyfriend, but never mentioned where we stand or if we should be "couples", he doesn't like arguing, and never really argued with me, which makes me sometimes think that he only wants to maintain the perfect image until he gets what he wants from me. We are planning on what we should do when he comes here, and he wants me to come over his Airbnb, watch a movie together, cook me some Greek food, and even have a pillow fight, yes, sounds a bit like a romantic fantasy, but he is really that romantic. I don't have any negative gut feeling about this, but I also don't want to end up fooled. I asked my friends in Europe about the dating culture there, and they told me that people there basically don't date, they just spend a good time together, have the first kiss, and continue as a couple (without having to discuss this) and for me, it just sounds like a cultural shock to me. I'm not sure if really that's his culture, or he's just playing around and possibly doing this with other women at the same time. I know his personal details (where he works, studied, his address, his full name) and did my research and found him on several websites which is a relief that he's really whom he is and not lying about his identity,but still that doesn't mean that he's not playing me. And it also gives me doubts sometimes that he never talks about his past relationships because when I talk about mine, he immediately gets a bit upset (he doesn't tell me he's upset but I can notice it from his face when we video chat), the only thing he told me about his part relationships is that he used to be in a sexual relationship with a girl but eventually ended it with her since he wanted to look for something more serious (he told me that she was also crazy and threatening him as she was in love with him but he was clear from the beginning that he doesn't have any feelings towards her, he just wanted to have sex and that's it.)

Anyone can advice me what to do?