Entertainment Music Justin Bieber 'Happiest He's Ever Been' with Hailey Baldwin Despite Public Breakdown: Source "He wonder if he deserves the happiness, and that's partly why he is emotional," a source close to Bieber tells PEOPLE By Melody Chiu Melody Chiu Instagram Twitter Melody Chiu is a Senior Editor for PEOPLE. She has been with the brand since 2009, editing, writing and reporting across all entertainment verticals. She oversees PEOPLE's music and events coverage and has written cover stories on Taylor Swift, Selena Gomez, Melissa McCarthy, Blake Shelton and Sandra Oh. The Los Angeles native graduated from the University of Southern California and has appeared on Extra!, The Talk, Access Hollywood and Good Morning America. People Editorial Guidelines Published on August 9, 2018 03:15 PM Share Tweet Pin Email Photo: Splash News After Justin Bieber and Hailey Baldwin were photographed earlier this week in the midst of a tearful and emotional conversation, fans wondered if there was trouble in paradise. Turns out, the pop star, 24, is just learning how to deal with his overwhelming feelings for his new fiancée and their upcoming wedding. “Justin being emotional has nothing to do with him not being happy. It’s the opposite. He is the happiest he has ever been,” says a source close to Bieber, who was seen crying at one point while being comforted by Baldwin. “He wonders if he deserves the happiness, and that’s partly why he is emotional.” Young and in Love! Every Photo of Justin Bieber & Fiancée Hailey Baldwin Since Rekindling Their Romance One day after his breakdown, Bieber — who is very involved in the Hillsong congregation — was seen clutching the book The Meaning of Marriage by Timothy Keller, and told TMZ he had a “bad day.” Earlier in the day, the couple were all smiles as they stopped by Cutler Salon for Bieber to get a quick trim. RELATED VIDEO: Justin Bieber Confirms Engagement to Hailey Baldwin: ‘My Heart Is Completely and Fully Yours’ The bestselling book is based on a sermon series by Keller and “offers instruction on how to have a successful marriage … for anyone who wants to know God and love more deeply in this life,” according to an Amazon description. Justin Bieber and Hailey Baldwin Look Loved-Up as Singer Gets Haircut Following a Day of Tears Splash Indeed, the Bieber source says the superstar — who proposed to Baldwin, 21, in July just months after he and ex-girlfriend Selena Gomez called it quits again — is questioning “how he can show his gratitude” and still figuring out “what his purpose” is in life. “He is so crazy about Hailey because she was always so supportive and understanding,” says the source. “They are still planning their wedding and can’t wait to be married.”