But despite being "very grateful" to the hunk, the pair are thought to have broken up so Kate Winslet can "concentrate on her career and children".
A source said yesterday: "Louis was just what "Kate Winslet" needed after her split from Sam and they had a wonderful time which helped her move on."
When asked about the break up, Louis, 35, said: "Unfortunately, I don't talk about my private life."
After getting married twice and romancing model Louis Dowler for four months, Kate Winslet has now realized that said she wants to be alone.
Kate Winslet even introduced him to her parents, Sally and Roger, just weeks into the relationship.
"Louis was just the tonic Kate Winslet needed after her painful split from Sam and they had a wonderful time," the Daily Mail quoted a friend as saying.
"However, they have realised their relationship isn't working and Kate needs space to be on her own.
"Louis was all for supporting Kate in Chicago and has bonded really well with her children.
Kate Winslet has reportedly broken up with boyfriend Louis Dowler.
Kate and director husband Sam Mendes, 45, announced their separation in March after 7 years of marriage.
The couple first met at a mutual friend's party shortly after Kate Winslet announced the end of her marriage to Sam Mendes.
"Louis was just the tonic Kate Winslet needed after her painful split from Sam and they had a wonderful time," a friend close to the couple told the Daily Mail.
"However, they have realised their relationship isn’t working and Kate Winslet needs space to be on her own.
