That's a lot like asking this:
I lied to friend B, but friend A knows about it and doesn't care-is that wrong?
The answer is yes. It's wrong.
Lying to people is wrong.
Lying to people who you want to consider dating is also setting yourself up for a nightmare of drama.
If they aren't interested in dating you because you are married, they aren't a good match for dating you. Basic incompatibility.
"Love As Thou Wilt"