只因不搭 Mismatched Pairings conveys a sense of disconnection or unsuitability

Relation Nicknames

对不上号 [duì bù shàng hào]
It doesnt match may indicate not fitting into preconceived notions or expectations about something ...
未相衬 [wèi xiāng chèn]
Unmatched means not fitting each other in some way probably reflecting on failed relations where ...
纵不合衬 [zòng bù hé chèn]
纵不合衬 which can be rendered in English as Even if we don ’ t match up perfectly The expression acknowledges ...
与你不衬 [yŭ nĭ bù chèn]
Not matching with you implies a situation where the person feels unsuitable or out of place with their ...