But who is she?

Tom Cruise has reportedly fallen head over heels with his new girlfriend, who Us Weekly describes as a "very normal and pretty" British woman who he's been dating for several months. “He’s serious about this relationship and wants to make it work,” the source added. “Tom wants some companionship."

The woman has stayed at Tom's London pad, and a source tells the mag, “they go on bike rides through the countryside. Sometimes Tom’s sister would join them.” The only issue is that no one seems to know her name -- or have a picture of her! So...how do we know she exists?

Tom and ex-wife Katie Holmes split in 2012, and according to reports, he barely has a relationship with their daughter Suri, who is now 10. As you know, Tom was previously married to Nicole Kidman from 1990 to 2001, and they have two adult children together, Connor, and Isabella. Think the 54-year-old actor has babies on the brain? It wouldn't be impossible...