Frontier Gal (movie, 1945)

Johnny Hart (Rod Cameron) is on the run from the law after killing one of the men who shot his partner. He passes through a town and stops at a saloon owned by singer Lorena Dumont (Yvonne de Carlo). The two seem a good, albeit tempestuous match, although Johnny has no plans to marry -- Lorena has other ideas and a shotgun wedding ensues.