Sometimes I am confused in the correct way of using me or to me. Example, answer me or answer to me; love me or love to me. Could you help me to differentiate each one?
Some verbs take "to" as preposition. It depends on the position of direct and indirect object in the sentence:
Give me the book.
"the book" is the direct object of "give", and "me" is the indirect object. If you change their position, you need "to" before "me" (indirect object):
Give the book to me.
The structure is:
'subject' +'verb' + 'direct object' + preposition + 'indirect object'
However, "answer" takes one direct object
Answer the question
If "answer" is used as "noun" it can take "to" as preposition
It is the answer to the question 4
These are important questions and we want answers to them
"Answer me" means "give me an answer" (or "say something".)
"Answer to me" is quite different, and means "Report [answer] to me and no one else":
Remember: you answer to me and no one else.
"Love me" means exactly what it says -- "Show me affection."
On its own, "love to me" is ungrammatical. However, you can use it in a sentence as @wintersoldier suggests:
Make love to me.