Hello Creedart. I am also gay and lived most of my life in secret. Both of my parents died without knowing... I never told them and never had a boyfriend with which to make them suspicious. As a result I am now old and alone.

Treasure your boyfriend. Do what you must with your parents. If you decide to tell them make sure you have good support from your boyfriend, sister, and friends in the event that your parents do not react well to the news. But you shouldn't live your life by their narrowmindedness. If they react badly it is their loss.