Jake Gyllenhaal's girlfriend is a huge fan of his sister.

The 'End of Watch' star recently introduced Alyssa Miller, whom he has been dating for six months, to his family, and the model has already formed a close bond with his older sister, Maggie Gyllenhaal, 35.

The 24-year-old model told E! News: ''She is great.''

The brunette beauty also admitted that Jake spoils her by cooking her delicious meals in his apartment and he has also been teaching her how to cook, as he is ''so good'' in the kitchen.

She said: ''Jake has taught me to cook some dishes. I love to cook as well.''

A source previously revealed that the couple's relationship is getting serious.

Alyssa and her former boyfriend, fashion photographer Bjorn Iooss Jr. moved into separate apartments in the same building in New York after they split but she decided to move out of the building completely in June and her doting new boyfriend was more than happy to assist her.

The insider said Jake is smitten with Alyssa but he wasn't ready to move in with her at the time and she found a new place of her own.

The 'Brokeback Mountain' actor has dated a slew of fellow A-list stars in the past including Reese Witherspoon, Kirsten Dunst, Minka Kelly and singer Taylor Swift.