Most likely, you’re pulling from your own insecurities or comparing this person’s response time to others from your past.
Be patient: The truth will eventually float to the top.
But public affection also just isn’t promoted in their culture. But I get it: Not getting affection returned can be hurtful and lead to questions.
I’m actually very tactile and do enjoy public affection.
I used to believe this; it was the fuel of many unwarranted fights.