Besides an Alpha male doesn't fear loss/rejection, because he can always get another woman. I've come to learn that the more women you interact with, the more chances you'll get to meet the "right one" (for me, the right one is an attractive, outgoing woman, who LOVES to give head, is bi-sexual, and is a GOOD friend at the same time, believe me, I've met and had a couple
).
If anything, turn the tables and send her a picture on your phone of you and a hot babe, hamming it up at a club. Or text her: "I'm at a club with (fill in the blank with a woman's name, real or fake) stop by, and hang out" like nothing happened. Otherwise she'll see you as needy, and it's all over, my friend. The message you're sending to her, and frankly ANY potential mate, is that you WANT her, but you don't really NEED her. Make an attempt to make her need YOU by informing her about all the FUN she won't have by not being with you.