1. 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。

2. 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。

3. 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。

4. 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。

5. I met my partner by the matchmaker.

partner 也可以用来指自己的另一半。