Can Betta Fish feel familiarity?

My husband and I have had a cute little betta for 3 weeks now and I'm not sure if I'm going crazy or if he's actually recognizing us? Normally he's very "chill" if that makes sense, just swimming around. But, now, when my husband or I walk up to the tank to say good morning or good night, he swims right up to the glass and will either blow a bubble, "shake" his fins, or stretch out his (gills?) for a second