When people get too attached, it makes it hard for them to let go hence the consequence of suffering for a month or worse, up to a year. Even if it might be harsh, a bitter truth is always better than the sugarcoated ones. If you fell out, just let the other person go. Don’t keep them just for the sake of not wanting to see them with someone else or because you don’t have a replacement just yet. Truth is the only thing that will set you free. Honesty is what will give you the best closure.