Most Helpful Guy
No, you haven't slept with too many guys. That is a tiny number. And only one different than him. That would be completely hypocritical of him to have a problem with that.
Don't worry about it. And don't let that define you. You are who you are. What you have done in the past doesn't dictate who you are now as a person. It is part of your path, but not the person walking it.
Most Helpful Girl
If he can't get over how many men you've slept with, he's pretty immature. But to be honest, if he was just surprised, and didn't bring it up again, I think you're reading way too much into it. He might just have expected you to be less open to sex because you have less experience (because you guys haven't slept together yet.) Just don't over-analyse. He's still with you, he hasn't brought it up again (probably.) And if he brings it up. Straight up tell him, that he needs to stop being a hypocrite and back off.