Way Too Subtle
It sounds like you are either very shy, or protecting yourself from potential rejection. But by doing so, you’re also repelling your crush. Men don’t get your kind of subtlety. You don’t have to display major cleavage, but a shirt that shows no skin at all puts you firmly in friend territory. A better choice would be a shirt that slips off your shoulder—casual, but still slightly revealing. It’s the perfect way to send the I-dig-you vibe without having to totally put yourself out there.