According to Osho, “bastard” is a social label that misses the essence: legality is irrelevant, love is the true parentage. He distinguishes three kinds: a “technical” bastard (born of love without marriage, even blessed); the real bastard (born within marriage without love); and the worst, born neither of love nor marriage, merely accidental. Don’t be burdened—love, not license, sanctifies birth.
If you’re born from love without marriage, that’s okay—the real problem is being born where there’s no love, even if there was a wedding.