hi sillypony.
all i have to add is:
you feel vibrant and excited because that is your true nature, and people who are like yourself recognize it and respond to it, and awaken those feelings in you, which can make anyone feel alive.
you love your boyfriend and want to stay with him, and since you do love him, he derserves your honesty. but i would never try to change anyone - you can ask him if it is something he wants to explore, but if he doesn't 'take' to it, then that is just the way it is.
why should you waste a lifetime denying your true nature, because you will just be half-living and unhappy in the long run.
if it were me, i would tell him this is what i am, and i wish to explore it, and explain all of it to him and give him the choice to hold onto me or not.
as for your newfound friend in France, the submissive in you is responding naturally to the Dom in Him. being obedient and serving Him is very pleasurable and makes you feel special and cherished, but you already know that.
good luck.