Am I being B.B.

There’s this cute girl in my class I talked to after class one day she seemed responsive. Few weeks later I told her to hang out she said okay. We went out. There was not a spark she seemed really not interested. So I never hit her up again I’d still see her around tho. Today out of the blue she says let’s hang after class. She hasn’t said anything in like the month after. What’s going on