United Kingdom, May 8 -- Justin Bieber finds love "exhausting".

The 'Peaches' singer - who has eight-month-old son Jack with wife Hailey Bieber - feels love is something he needs to "earn" and he doesn't always find the effort easy.

He wrote on his Instagram Story: "Love isn't a u get what u put in kinda thing.

"It's a receiving thing. Still find myself trying to earn love. And It's exhausting."

Justin, 31, noted he is loved "no matter what" he does but still struggles to think love is "deserved".

He continued: "People telling me I deserved things.

"Made me exhausted from trying to prove I was worthy at times.

"Also made me feel more entitled at times.

"It either makes us feel not good enough or that we're owed something. True lov...