Yes A's do thrive in secrecy and fantasy. Once it's exposed to real life and have very little change to survive the long term. They sacrificed so much for it so it's only logical they would want to commit quickly and move forward so they can have the life they always wanted with the person they think is perfect for them. Real life will most likely rip it to shreds at some point even if it looks like it's gong good for them. Anything built on deception is destined to fail.
Accept what is, let go of what was, and have faith in what will be