That’s a critical privacy question, and you’re right to ask for a clear answer before starting.
The Straight Answer: No, by default your Dating profile is not visible to your existing Facebook friends, and you will not be suggested to them as a potential match.
The platform treats your Dating profile—with all its unique image and text content—as a completely separate format from your main Facebook profile.
The entire Dating feature is designed as an opt-in, separate space. None of your Dating activity, including your profile, likes, or conversations, will ever appear on your main newsfeed or timeline. There is one single exception that you control called ‘Secret Crush’. This feature allows you to privately select up to nine of your existing friends; however, nothing happens unless one of those people also adds you to their list. If they don’t, they will never know you added them. You also have a setting to control whether you are suggested to ‘friends of friends’, which you can turn off for even greater privacy.
Cheers,
Jeff