I think it's about someone watching someone they care about getting married with the wrong person and it's not their soulmate. I think this person has probably been hurt a lot in love and has just decided not to love and marry someone even if she isn't in love. They have a "cold gun" because she pretty much killing herself by marrying someone she doesn't love. He's telling her to take her time and don't rush things and just wait for real love to come to her.
I think it's about someone watching someone they care about getting married with the wrong person and it's not their soulmate. I think this person has probably been hurt a lot in love and has just decided not to love and marry someone even if she isn't in love. They have a "cold gun" because she pretty much killing herself by marrying someone she doesn't love. He's telling her to take her time and don't rush things and just wait for real love to come to her.