Drake and Rihanna split earlier this month.
Mayer has been linked with Katy Perry, Jessica Simpson and Taylor Swift; while Lovato with Wilmer Valderrama.
In the testimony, Swift described feeling 'violated' after alleged assault backstage at one of star's concerts.
The Batman actor was previously linked to Taylor Swift, but the claims were rebutted.
Affleck had mentioned the pop star during a recent interview: 'I introduced my two girls to Taylor Swift'
Lovato had previously slammed Swift's girl squad as fake.
Affleck and Jennifer Garner continue to co-parent their three children – Violet 10, Seraphina 7, and Samuel, 4.
Kardashian explained to Billboard why she intervened in her husband Kanye West's feud with the singer.
The rapper defended his controversial track during the Bridgestone Arena date of his Saint Pablo tour.
Kardashian insists she did not mean to embarrass Swift by sharing a Snapchat video of her talking Kanye West.
Hiddleston and Swift ended their three-month romance earlier in September.
'She has been missing her fans and performing her music and hopes to get back on the road soon,' says a report.
Hiddleston has been nominated in the category of Lead Actor in a Limited Series or Movie for his BBC One series The Night Manager.
Fans have speculated that the track is about his relationship with the Bad Blood singer.
Taylor Swift and Tom Hiddleston recently ended their three-month romance.
Taylor might be a little put out by reports that her ex Calvin Harris has found love with Lopez.
Swift has disclosed her interest in the Baywatch actor to her friends.
Harris was in a relationship with Wolf for seven months.
IBTimes UK senior entertainment reporter Alicia Adejobi rounds up this week's music stories.
Swift and Hiddleston parted ways recently after dating for 3 months.
Replying to a fan on collaborating with Swift, Perry said she would not mind if Bad Blood singer apologised.
The singer reportedly dismissed string of celebrity boyfriends as 'a sideshow' to her music career.