Your details are soft, you don't know your gear. Don't cut off joints. Tell them to get closer. The arm in her back is making her fatter. Deep black is a bad choice for a couple shoot. Your background is cluttered, a fucking plain wall could have worked. >>3658761
Slightly tilted. Subject too off-centered. His eyes are awful, like : "I miss my onions latte so much, I should sleep more instead of playing late with my switch". Is this SOOC? just apply any preset then cause your PP is flat and boring. Needs a narrower aperture.>>3658764
Awful pose. Awful eye directing. Over-corrected perspective or shit knows how you twisted every lines like that. Back-lighting but the subject is still underexposed. Not even salvageable in post cause you cut his feet. Needs a narrower aperture or more care to select the focus point.
TL-DR you're a girl with gear you don't fully control yet, and no apparent patience or care for post-processing. Drop the 105mm and use a 55mm-85mm. Hell, even a 35mm will do.
Post the raw of >>3658764