1、一往情深 be passionately devoted
2、两情相悦 deeply attracted and attached to each other
3、地老天荒 the end of life
4、天作之合 a heaven-made match
5、天长地久 enduring as the universe
6、如胶似漆 love each other dearly
7、山盟海誓 a solemn pledge of love
8、心心相印 have mutual affinity
9、心有灵犀 Minds think alike
10、情投意合 agree in opinion
11、情有独钟 show special preference to
12、情比金坚 Love is stronger than gold
13、执子之手 The hand of the master
14、比翼双飞 happy couple
15、永结连理 Permanent knot connection
16、永远爱你 love you forever
17、海枯石烂 till the seas dry up and the rocks decay
18、海誓山盟 exchange solemn vows and pledges
19、珠联璧合 each improves by association with the other
20、琴瑟之好 The best of zither
21、琴瑟合鸣 The combination of zither and zither
22、生死不渝 abiding
23、白头偕老 live to old age in conjugal bliss
24、白头到老 reach old age
25、相亲相爱 be deeply attached to each other
26、相敬如宾 respect
27、相濡以沫 mutual help and relief in time of poverty
28、矢志不渝 abide by one's faith
29、至死不渝 will never change until death
30、至死不逾 Till death
31、花好月圆 Booming Flowers and a Full Moon
32、长相思守 Everlasting longing for each other
33、非你不娶 You don't marry