A friend questioned me on this topic... "Is is a SIN for a Sikh to marry a NON-Sikh regardless on whether or not the Sikh converts to his/her partners religion."

I hope that we can have an open discussion about this and I can eventually get a right answer to it...

QUESTION:

Q1) Is it a sin for a Sikh to marry a non-Sikh even though he stays in Sikhism and his partner remains in her religion?

Q2) Is it a sin for a Sikh to marry a non-Sikh and converts to his partner's religion?

Q3) Any other comments. Open discussion.