Reese Witherspoon has warned Jennifer Aniston to keep her hands off Jake Gyllenhaal, it has been reported. Reese, who has been dating Jake for around two months, was said to be furious after the 'Brokeback Mountain' actor shared an intimate embrace and prolonged kiss with Jennifer at an awards ceremony earlier this month, and has warned her to stay away. A source told Woman's Day magazine: "It wasn't just a polite peck on the cheek. There was definitely feeling in that embrace."When Reese heard about it, she broke down in tears asking, 'Why would he do that?' She is very unhappy about it."In November, Reese, 31, filed for divorce from her husband of seven years Ryan Phillippe, with who she has two children.The Oscar-winning star had thought that Jake, 26, was "everything Ryan wasn't". But after the incident with Jennifer at Los Angeles' 18th Annual GLAAD Media Awards "she's beginning to wonder".The source added: "She always thought Jake was intelligent and charming. That's why she's so stunned by the photographs of Jake and Jen. She's really hurt by what she's seen. They seem to be very explicit and everyone knows Jennifer's looking for love."Jake, who starred with Jennifer in 'The Good Girl', was presenting the former 'Friends' star with the Vanguard Award. Jennifer, 38, was formerly married to Brad Pitt before they split and he embarked on a relationship with Angelina Jolie. She then dated her 'The Break-Up' co-star Vince Vaughn but their relationship ended last year.