Hello !
As long as you're staying within "limits" and staying, there's nothing wrong with dating a guy, alone.
Just make sure both your intentions are clear, and avoid 'risky' situations. You first need to know what kind of guy he is, and what he's looking for ! Don't rush into marriage until you created a strong emotional bond between you two.
I have a muslim background btw, although I don't believe anymore, but if I was still in belief, I would have dated without a 3rd person. Preferabily in public places, outdoor, and with limited physical contact
Take care !