Alright, you like this chick, see...
...but the problem is you are a baseball nerd.
Not a lot to talk about between you two, eh?
Ah, try this one...
First you explain your love of baseball as a way to measure greatness.
Stats tell us what happens over the long haul. When we follow stats we seek a deeper commitment with the truth. Spell this out for her over dinner, and not at some Olive Garden dump, okay? She will only be half following you but since you said the word commitment, believe you me she will be slowly dropping into one of those hypnotic states that will allow you to work your magic.
Alright so you explain a few simple stats, HRs, batting average... don't ramble on too much Poindexter, but get her into it as efficiently as you can. Then explain Wins Above Replacement. Tell her that a replacement player is the base qualified kid to put on a major league uniform. Then explain that a superstar has a really high WAR. His rating of regularly being awesome puts him way above that replacement player. Talk slow and look her in the eye. And don't stop to scrape the plaque off your teeth in the middle of this chat, you should have brushed your teeth before the date, jiminy crispies do I gotta tell you that? No? Okay, anyway, once she is nodding in semi-comprehension, tell her that she leads the majors in Love Above Replacement girl. Tell her she is so far ahead of any other woman that the choices in this world that your Love Stat of LAR that she is the only one you want.
And wear a condom.