Sex on the first date?

i met a woman from a car meet a while back and began talking to her again very recently. we had our first date and we hit everything off really really well. we laughed at all the same things, had the same opinions on a lot of things, we joked around and just had deep discussions on personal shit and we'd listen to each other. we stayed up and watched movies on the couch all night until about 3am and by the end of the night we had sex, really long sex, both knowing she had to be at work in a few hours, she stayed anyway afterwards and we just layed there and just talked about each other and did cute shit. i like every single thing about her and i feel like I'm falling for her really hard, but since we did it on the first date should i be concerned?
Sex on the first date?
Add Opinion