love affair

英 [ˈlʌv əfeə(r)]

美 [ˈlʌv əfer]

n. 风流韵事; (非夫妻间的)性关系; (对某事)极大的热情，强烈的兴趣

Collins.1

牛津词典

noun

风流韵事；（非夫妻间的）性关系
a romantic and/or sexual relationship between two people who are in love and not married to each other
（对某事）极大的热情，强烈的兴趣
great enthusiasm for sth
1. the English love affair with gardening
  英格兰人对园艺的热爱

N-COUNT 风流韵事；（非夫妻或同居情侣间的）恋爱（或性）关系
Alove affairis a romantic and usually sexual relationship between two people who love each other but who are not married or living together.
1. ...a stressful love affair with a married man.
  与一个已婚男人的痛苦婚外情
N-SING 极大的喜爱；强烈的的兴趣
If you refer to someone'slove affair withsomething, you mean that they like it a lot and are very enthusiastic about it.
1. ...the American love affair with firearms...
  美国人对枪支的癖好
2. Tom's love affair with France and most things French knew no bounds.
  汤姆对法国和大多数法国东西都无比热爱。

noun

Samantha: Let's hear what the worldwide love affair with the romance novel is about, in Dateline USA.
萨曼莎：在美国报道中，让我们来听听全世界与浪漫小说的相恋吧。
His wife left him when she found out about his love affair.
当他的老婆发现他有外遇时便离开了他。
A perfect ending for a love affair that had lasted nearly sixty years.
一份持续了60年的爱终于得到了完美的结局！
Thus began my first love affair.
就这样，开始了我的初恋。
With the theme of "Love" which bless you to have a romantic and happy love affair.
以「爱情」为题以祝福你有浪漫和开心的爱情。
And all these somehow became the beginning of an invisible love affair between us two.
而这就很快变成了我们隐形恋情的开端。
So I began another sensational love affair, which, of course, again ended tragically.
于是我又有了一场海誓山盟的恋爱，结果当然也不妙。
Her 10-year love affair is about to culminate in a wedding.
她长达十年的爱情长跑终于要在婚礼中走向高潮了。
With the end of my love affair, I lost all the self-confidence I once had
恋爱告吹后，我一时间自信全无。
I've got enough troubles without a love affair to complicate things.
我们已经很麻烦了，还要再加上复杂的爱情事件。