The Sinistrella model is highly recommended for this lora. this lora creates 1940s type romance photos. the default is black and white but you can do colorized photos, too

Str: 0.8-1

Keywords: hud_40s_lv, monochrome, greyscale, 1girl, 1boy, suit, dress, film grain, cinematic

can also add in : colorized (for colorized photos), eyes closed, looking at another, kiss, hug and also can change their clothing, hair style and light hair, dark hair, hetero, etc