The fear of getting your weight checked is called Pocrescophobia.
phobophobia
There is no specific phobia for getting your throat cut, but there is a phobia for dying: Thanatophobia or Thantophobia- Fear of death or dying. It might also be a phobia of pain. Known as agliophobia or algophobia.
Indeed the fear of relationships is a recognised phobia.The phobia of being in a relationship is called Philophobia.
Your girlfriend may have a phobia of getting married. It is a real phobia which is medically recognised. The phobia is called Gamophobia. Or she may have ecclesiophobia, which is the fear of churches.
rhytiphobia
die
geotaughtaphobia
reutyiphobia
Insecurity.
Emetophobia
Normalphobia
He may have a phobia. The phobia of marriage is a medically recognised phobia. It is called Gamophobia.It is also possible he may have ecclesiophobia, the fear of churches.