Honesty in Bed

I'm a trans man in my twenties, and I've been with my partner, Alex, for almost two years now. We have a good relationship, but recently, there's something I feel uncomfortable sharing with him. It started when we tried some roleplay that pushed me out of my comfort zone, it felt like a mix of excitement and vulnerability. Ever since then, during real moments, I find myself thinking about those intense feelings but hesitating to act on them because I fear he won't understand or accept them. Am I the only one who feels this way? Is it normal for these lines between fantasy and reality to blur?