It seems the advice of some here is that you and husband should plan to conceal from the IRCC that you are separated and no longer a couple. I am not sure that is right, but very much the way things are done in today's world. A little misrepresentation never hurt anyone, right? So, in that case, be sure to prevail upon him to do all that he can to bring you to Canada.
In my view, your husband would be a fool to help you to get here. Seems he is happy with his new relationship. If the assists you to get here, he works against his own interests, does he not? Then you can be close to hand and create problems for him and the "home wrecker". You can pursue him in Canada for child and spousal support. If you are stuck in the PI, what can you do? Husbands in the Phils abandon families all the time with impunity. I know a lot of single moms there whose husbands went off and had another family and not one that I know of ever got a peso in child or spousal support. And that's when the husband is still in the Phils. If he is here and you are there, you are powerless. Yes, you can start an action in the Phils courts and see if you can get an order for child and spousal support. You would then have to hire an attorney in your husband's province in Canada and see if the superior court of that province will recognize and enforce the foreign judgment. I would guess that, at a minimum, you'll face legal fees here in the range of $10,000 (P400,000). That's on top of your Phils attorney's bill. Even then, with the right legal advice, he can avoid paying. Canada is a debtor's paradise. A bit of savvy about how to avoid garnishing orders, etc., can delay, hinder, defeat and deny all but the most persistent (and well-heeled) of creditors. But, if you are here, you can still hound him.
So, again, why would he cooperate to bring you here? But, you suggest he is easily influenced and led, so maybe you can induce him to go along. Kinda' like "Come into my parlour, said the spider to the fly." Of course another reason why he should resist, is that by keeping you at bay in the RP, he can concentrate on helping his gf to stay in Canada. Seems her ability to remain here is uncertain. If she goes back to PI, she faces possible criminal charges initiated by you. Not a strong incentive to return home. She can live with him here for a year and seek to become a PR as his common law spouse.
In time, your husband can divorce you here. The Phils (through a court process) will recognize the divorce if he is a Canadian citizen when he applies for divorce.
@canuck78 has mentioned divorce, and
@Naturgrl girl has suggested a divorce attorney, but, as you know, no such thing in the Phils. You face the long, expensive and uncertain avenue of annulment. If you are to be free to marry again, if you stay there, you must wait for him to become a citizen and divorce you here, or you must seek annulment there. The only women I have met in the Phils who have been annulled are ones who met foreign men who wanted to marry them and take them abroad. The foreign men have paid the annulment costs. Lots of women (men too) in the Phils, are separated for years and still married.
Finally, as to pursuit of "alimony" and child support in Canada, there's maybe not much point. You mention knowing husband for 20 years. That could be from age 1 to 21 or age 30 to 50, or anything. In Canada, child support ends with age of majority (19 in my province of BC at the moment), although there can be an obligation to provide support to full-time post-secondary students. You mentioned having him support you and kids until you get established. As for as the kids go, if they are minors, you cannot waive child support. It's the right of the child and not yours to give or bargain away. As for supporting you, you have said even the IRCC is aware of your superior earning power. In that case, you might end up having to pay him. No joke. That can happen, just to add insult to injury. If you can access online the Canadian Spousal Support Advisory Guidelines, you'll get some idea. Although the SSAG purport to be no more than "advisory guidelines" and not law, Canadian courts follow them very closely.
Your situation is crappy, for sure. As
@Copingwithlife suggests, you have not altogether met the equitable maxim of "He who seeks equity must come with clean hands. " However, you would appear to be more sinned against than sinning.
Good luck.
