I am writing a romantasy novel and I’m starting out with a love interest who was a previous ex. In the end, he will betray her, however I need some character flaws that leaves characters feeling uneasy about him. Any tips?

Read also:

• Moon dust is less toxic than urban air pollution, scientists discover - Space
• Exclusive: Clean energy investment hits new highs and shows no sign of slowing - TechCrunch
• Simone Biles calls Riley Gaines 'sick' over criticism of transgender athletes - NBC News
• Analysts revamp forecast for Nvidia-backed AI stock - TheStreet
• Can you summarize season 1 of "The Acolyte"?
• How do you get the most out of red light therapy?
• Why do narcissists keep calling on the phone after years of separation?
• 'The Walking Dead: Dead City' finale ending with Negan and Maggie explained - Entertainment Weekly
• AMD confirms AGESA 1.2.0.3e fixes TPM security flaw - VideoCardz.com
• Are British people in awe when someone from the United States visits their country?
• If there was only one man remaining on the Earth, would this be regarded as extinction?
• This Is How To Make Your Brain Act 4 Years Younger, According To Science - MindBodyGreen
• Why can't the ISS take a picture of Earth and prove to the Flat Earth Society that Earth is not really flat?
• Musk Denies Ketamine Use Following New York Times Report - Bloomberg.com
• What percent of "being a good programmer" is due to expertise in the syntax of a language(s)? Could you have mastered syntax and still be a bad programmer; or, conversely, be a great programmer with only a fundamental handle on syntax?