The other person could have easily avoided this awkwardness. They could have just said “I like you too”. Like yeah they misread the situation. Even if they were actual dates it doesn’t automatically mean the other person has feelings for them. People often go on dates without having any preexisting feelings for the other person. And just want to go out for a good time. Even kissing and sex doesn’t always mean the other person is into you. It’s not uncommon that the other person starts developing feelings after a few dates.