im here in philippines, how can my boyfriend sponsor me?

[peachy22]

we have a son already but were not married yet...

[CharlieD10]

You have to prove that you cohabited (lived together) for a minimum of 12 months continuously to qualify as common-law.  Or, if there is some impediment (barrier) to the two of you getting married, but you can prove you have been a couple in a conjugal (marriage-like) relationship for at least 12 months, then you may apply as conjugal.

If none of these apply, he cannot sponsor you unless he marries you.

Also, if he has already landed in Canada and did not declare the existence of your son and your prior relationship, he cannot sponsor you.

[sivathegreat]

we have a son already but were not married yet...

I assume that your BF did not mention your relationship in his application. In that case things are a little bit tricky for you.

1. He has to marry you
2. He cannot sponsor the child as his dependent since he did not declare it in his PR Application
3. However the child will be part of your application as a "Dependent child"

Your boy friend has to have a convincing answer why he did not declare the child and the relationship.
- If he says he knew the existence of the child at the time of PR application then he will be asked why he did not tell them
- If he say he did not know that you had a child through him, then he will be asked how come he did not know it?

Whatever you both should be convincing.

Please see this part of IRPA comentary if you are technically inclined, This is about DENYING FAMILY CLASS APPLICATION WITHOUT PRIOR EXAMINATION

IRPR 117(9) D, 10 and 11

link below

http://www.cba.org/cba/submissions/pdf/05-20-eng.pdf

read page two it says such child cannot be sponsored.
You might want to consult a good immigration lawyer

Do not take advices from forum as authentic.(including mine)