5. “Your girlfriend is so lucky.” Envy his girlfriend.
“She said, ‘I wish I had a boyfriend like you.’ Wait, what’s that supposed to mean? I couldn’t let that slip by,” a confused young man in his early 20s tells us. By being envious of his girlfriend, you’ll be hinting that you’re really into him. This is a pretty aggressive approach to indicate your fondness and, unless he’s exceptionally oblivious, he’ll notice your advances.