Selena Gomez is ''learning the hard way''.

The 22-year-old actress took to Twitter yesterday (01.10.14), posting two cryptic messages, claiming she didn't feel ''good enough'' and was turning to god, just days after her on-off boyfriend Justin Bieber was spotted enjoying a boozy lunch date with her model pal Kendall Jenner while the trio attended Paris Fashion Week.

The brunette beauty is also believed to have deleted Justin - with whom she recently enjoyed a luxurious break to the Caribbean island of St Martin - off her Instagram account and has started following a pair of hunky models instead, reports HollywoodLife.com.

She wrote on the social media site: ''Sometimes we think we aren't good enough. But then I realize when I think I'm alone I have God.''

''We have to learn the hard way sometimes.''

Although it isn't known whether her tweets are directly related to Justin's date with Kendall, Selena - who is thought to have flown back to the US alone - previously had a bust-up with Kendall and her younger sister Kylie Jenner, 17, after they attended the Coachella Valley Music Festival in California, when she found text messages from Kylie on Justin's phone.

However, Selena reportedly ended her feud with the 'Keeping Up with the Kardashians' stars in April after realising she ''overreacted.''

A source said at the time: ''Selena has no issues with the Jenner girls. They had an issue but they have cleared it up. She has always liked the Jenner girls. They had been fans of Selena since they were young.''

Meanwhile, Justin, 20, was seemingly enjoying his time in the French capital.

Following his lunch with Kendall, 18, he wrote on Twitter: ''I love Paris.''