Legal Question in Family Law in California

Well yes and yet probably no. The alimony was not legally cancelled since the remarriage was void. However, "romantic cohabitation" with a new partner is usually grounds to reduce or end spousal support even without marriage. You also probably don't want to go into court and confess a crime (bigamy). You should be looking at how to clean up your second marriage. You don't have any of the rights that go with that. You need to have that marriage annulled and get remarried or you lose all legal rights that you acquire upon marriage.