You've started noticing something when you and blaze would hangout with each other now that you guys are dating,you would notice how her tail going side to side and how she would get more affectionate and "flirty" with you)

(A bit later you're in blazes house in the living room waiting for her Blaze came down the stairs and walked over to you,her face look a bit red)

"Hey,sorry to make you wait"

(she sat down next to you on the couch and look at you)