Am i demiromantic??? Im not sure

Ok so ive only recently come to terms with possibly being demiromantic and theres this girl i like. Weve been talking for about a month and i really like her but not so much that i think i love her. If im being honest sometimes her romantic advances make me feel weird in a bad way. (For context were in a mutual understanding situation, not dating but not just friends). I'm not sure if i should ask her to be my girlfriend when i know i cant reciprocate her feelings just yet...i do want to date her because ive found that I only develop serious feelings for a person im clearly dating! But im not sure if thats because im weird or if im actually demiromantic... ive read so many stories that it takes demiromantic people a while before dating but i really wanna date her. Help please!