Well now you have to go into straight stalker mode, we can't let her get away now can we.

First crated a diversion pulling the staff and folks in the gym away from the front desk. (giving you time with the gym's computer) I would suggest smacking a person in the free weight room (five pounder will work well, do not kill them!) in such a manner that they are rendered unconcious.

Now scream for help that this person is having a stroke or heart attack! (they are not, so don't feel bad remember you have to find your true love!)

Now that everyone has come running to "Sleepy's" side, hit the computer data base and depending on the system try to narrow your search to young females, there should be pictures for the staff to verify people in to the gym.

Once you have foung her make sure you take all of her info down on paper, there will be some in front of you I am sure, either post it pads or the front desk kid's Biology notebook. When you get better at this just commit the info to your brain, less of a trail to you!
Now you have to do this next part pretty SLY, post yourself outside of her place and wait, I think a wig should be worn (mullet) just in the case she gets a look at you, she will not realize who you are. (she may like you form what we know, and have vivid picture burned into her mind of that killer bald head!) You may feel a little a bit strange going to these lengths but, she
is the one, stay the course!
When she departs from home follow her and go to the place she goes, there you can have a "random" encounter with her. If she is buying "Girl Products" at the store, tell her you use tampons where you coach to stop nose bleeds, and that you work with inner city youth boxing programs. (To keep good kids off the street.)

( This is just an example, be quick and make sure your little cover story paints you as a caring person, looking to better the world!)
Tell her you have missed her at the gym, but not in a "funny stalker" way! She will laugh and more than likely blush, now go for the throat, ask her out! You will end up married and live happily ever after, I am sure....................Now about those loose ends, you are going to have to find your victim (Sleepy) fom the gym, he/she may have seen you, not good bro, not good!!!!