It can be just politeness but many guys today(present time) are too cool to say I love you back so he definatley loves you!
they usually say that because you can't explain love, it just happens
ego problem
The word "courtesy" means a show of politeness towards others. Some synonyms for the word courtesy are politeness, civility, comity, urbanity, and mannerliness.
I believe it means he likes you a lot and wants to see how you respond to it so don't blow it and respond back!
He's probably just busy, he might respond eventually but if not keep in mind he has allot going on.
Maybe he does like you or he is just scared to respond, because he dosen't no how you think about him!
Seems pretty self-explanatory to me. It doesn't cost anything (dollar-wise) to be polite. But politeness can "earn" much for you. Friendship, for instance, which can reap many rewards (monetary and otherwise). Politeness can open doors, and cause others to help you or at least be social with you who would not, if you were not polite.
they are in love with you or they are just doinng it because they just want to have sex with you if you love him go for it
Using or marked by prudence, expedience, and shrewdness; artful.(different from politics - see related question)
it means like i love you like you are my brother or sister, but I'm not in love with you. so its just best if we just stay friends!!
Probably nothing, people are not "robots" that always respond as you might expect.
NO. no one is to obest. its just called love. especially if you are a teen. its just showing that you really love him. that's all.