Demiromantic ace, maybe?

So, I’ve been with my girlfriend for about 4 months now. Until now, I never thought of doing any romantic things with her or anyone else. But recently, I’ve been wanting to cuddle her, kiss her, and just do a bunch of romantic thing with her and I dunno, I’ve never felt this before with anyone. And now that I keep thinking about it, the only person I’ve truly liked before was her, any other relationship I was in, I didn’t feel anything... so I was wondering what that meant for me as well... I’ve also never had sexual attraction to anyone, not even her, so I might be demiromantic ace?