This sign is commitment-phobic. Once married, Geminis fear that their feelings will change, so they refuse to marry anyone to avoid having to face the possibility of divorce.
Sagittarians are people who don't let themselves be captured in a relationship. Craving independence, this sign's natives are very afraid that 'marriage' rhymes with 'deprivation of freedom'.
This sign is very sensitive and to avoid heart break, Aquarians prefer to make a moderate commitment to a relationship so as not to set themselves up for heartbreak.