Lucas "Luke" Danes is the owner of Luke's Diner on Gilmore Girls. Luke starts off as friends with Lorelai but it's obvious he's in love with her and is just unable to express it due to outside circumstances such as Max.
During the season four finale, Lorelai and Luke kiss and they end up dating during much of season five until Christopher comes back intot he picture and marries Lorelai.
During season six, a 12 year old girl, April, arrives at his diner and turns out to be his daughter. During th series finale, it's implied that Luke ends up with Lorelai.
Luke: Coffee, and fries (looks at Rory as she's sipping her coffee). I can't stand it. This is so unhealthy. Rory, please. Put down that cup of coffee. You do not want to grow up to be like your mom.
Rory: Sorry, too late.
Lorelai: (speaking to Luke) Wow, you look nice. Really nice.
Luke: I had a meeting earlier at the bank. They like collars. You look nice, too.
Lorelai: I had a flagellation to go to.
Luke: So, what'll you have?
Lorelai: Coffee, in a vat.
Rory: I'll have coffee also. And chili fries.
Luke: That's quite a refined palate you got there.
(Luke walks to the counter)
Lorelai: (to Rory) Behold the healing powers of a bath.