This is not a great idea in my opinion, here's why:

One should never feel withdrawn from any conversations, or exploring their feelings. If you want to ask someone out, but have fear/anxiety, you have a "problem" you need to address bravely. Get to the bottom of your fears, reach a conclusion and act on it. Whatever happens, happens. Using thoughter just leaves you buried in your comfort zone, making you never questioning the nature of your own self. It's an easy way out or an excuse for not being accountable to your self. Leaving result of important situations in your life to external circumstances is not a good idea.