Correct

爱情 vs 爱

/ àiqíng vs ài /
Strokes

Definition

爱情 is a Noun, 爱 is Verb, which means [love, to love].

Example

爱情 is a noun meaning the love between a man and a woman.
1) 爱 is a verb, with several meanings.

2) 爱 as the subject or object of a sentence is often the same as 爱情. In example ①, 爱情 can be replaced by 爱.

3) 爱情 mostly goes with polysyllabic words,e.g. 爱情故事, 爱情关系 (example ②).
1
men
我们
zànchéng
赞成
méiyǒu
没有
àiqíng
爱情
de
hūnyīn
婚姻
  

We are against the marriage without love.

2
liǎ
他俩
yǒu
le
àiqíng
爱情
guānxi
关系
  

They fell in love with each other.

爱情 and 爱 in the following example are also interchangeable.
3
men
他们
de
àiqíng
爱情
  
(
ài
  
)
shì
zhēnchéng
真诚
de
  

The love between them is sincere.

The main usage of 爱 (as the predicate of a sentence )is different from that of 爱情.
4
Zhè
zhǐ
shì
shí
de
ài
  
,
shi
zhēnzhèng
真正
de
àiqíng
爱情
  

This is only a moment's impulse, not the real love.