Love factor

The 2-4 point jump on the 1-10 attractiveness scale your partner gets when you've fallen for them. You know you're in love when all the sudden your partner has gone from a solid 7 to a 9.

Guy 1 : " Dude, I think I'm in love."
Guy 2 : " Why?"
Guy 1 : " I used to think my girlfriend was a solid 7, now when I look at her she's a 9!"

Guy 2 : " Yeah she's got you with that love factor, man.