ANSWER:

It is Satan who hates marriage the most as Allah mentioned in 2:102 that they learn black magic to separate a man from his wife. 

Ignore such thoughts and feel positive and think positively of Allah

QUESTION: Why is it that when a marriage proposal comes, instead of feeling happy, I feel sad/uneasy, almost like Im about to be caged,even though I genuinely want nt to get married&long for companionship? What could be the reason behind this feeling?