Is it OK to fib about this?

When dating I've been intentionally not bringing up the fact that I've never been in a relationship before. Sometimes I get asked and I panic about it so I'll say I've had a few relationships or flings that didn't last long so that the other person doesn't think I'm completely inexperienced. I do feel guilty lying but I don't expect other people to discuss their romantic or sexual history. It just doesn't matter to me how many people someone has been with. I turn 27 soon and I don't want someone knowing they would have to teach me sex or relationships so I feel it's worth it to lie.