Where can British people find their ideal spouses？
spouse 是配偶的意思，指夫或妻，用于比较正式的场合。

How do they meet their other halves?
other half，“另一半”，那口子（指自己的配偶），同时也可以指代男女朋友。

Quite a lot of people said they meet girlfriends or boyfriends when they are out in a bar or club, or at a party.
boyfriend/girlfriend 男/女朋友，指尚未步入婚姻殿堂的情侣们。

After a couple are engaged, they usually refer to each other as fiance/fiancee before others.
fiance/fiancee未婚夫/妇

Sometimes people meet the love of their life at a party or in a pub.
the love of your life 一生之爱，通常用于已经结婚的伴侣或是两人关系密切而稳定。

I met my partner by the matchmaker.
partner 也可以用来指自己的另一半。

除此之外还有几种比较甜蜜，幸福的称呼：
my wifie/hubby
my Mr./Miss. Right
my lover
my beloved
my sweetheart
my prince/princess

当a couple直呼对方时，英语如何表达呢？ 可任选如下一种：
dear
honey
babe
darling
sweetheart