How do I tell my parents I'm gay?

really tired of getting asked who i'm dating, have I found someone yet etc.at the same time dont really want to "come out" dont really feel it's a big deal, and not my entire family and circle of friends has to be told. and only parents should really know due to me having a boyfriend.at the same time I can't really do it, always about to do it and just change the subject before i'm actually about to do it.just can't imagine having to tell them it, feel like it's not what they had in mind for me.also dont like the implication of being in the back of their minds as the son who sucks dick.