Him blocking you could mean he doesn't want to have anything to do with you anymore or he probably just blocks himself from the site.
Issues like this usually arose when partners do not have good established way of communicating earlier. Sometimes, the partners are not confident enough to express their true feelings to each other and so when something goes wrong, they either get hurt or are pushed easily to doubting each other.
If you love a person truly and the person knows that you do; and you also know the person also truly loves you, you would realize that you both wouldn't do anything to hurt each other even when things go wrong. And when something goes wrong, sit down, give room for explaination and try to solve it before you consider the next move. It's not fair if he did block you, because he's not giving room for an understanding way of solving your differences.
Above all, my advice is that you do what your heart tells you, if it's not clear, pray again and listen to what it says. Goodluck. Helena_231