After first dates from Hinge/Tinder, occasionally I am told by the woman that I did not possess a "romantic connection/spark." A lot of them are successful, but I hear that sometimes too.

Does it just mean she found me repulsive/unattractive? My dates are pretty standard (quick drink or coffee) and the general conversation is fine, but when they say this it always struck as a bit odd. I don't tend to smile at them on dates and I may come across a bit cold/disinterested (that's just me), but it's quite a weird thing to say.