It will be easy for you to know whether they are kissing you privately because they don't believe in or are awkward with PDA or whether it is because they aren't proud enough of you to kiss you in public.
Kuyoba lula ngawe ukwazi ukuthi basuke kissing nawe ngasese ngoba abakholelwa noma kwambangela nge PDA noma kungaba ngoba uyaziqhenya ngokwanele ukukuqabula obala.