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:

• Did another parent ever tell you something about your child that you didn’t know?
• What methods do private investigators use to investigate someone in real life?
• Has the time come for Ukraine to come to terms with Russia since the situation on the battlefield is clearly hopeless at this point?
• Do they have internet in hell? Most people on here seem like damned souls or demons.
• That whole wheat bread you've been eating is often a trap - it's not what you think it is - Earth.com
• What traits are considered unattractive? Which traits are typically seen as attractive and why?
• Scientists make jaw-dropping find after drilling more than 1,500 feet into Antarctic ice: 'We even discovered a school of lobster-like creatures' - The Cool Down
• How is the legalization of same-sex marriage impacting societal norms in the USA?
• When are the gas prices supposed to go up? Just asking because I was told by "educated" liberals that they were going to go throught the roof, but all I see are prices going down, especially in my home state of Ohio!!!
• J&J ties early-stage lymphoma CAR-T to 100% response rate in 10 patients - Fierce Biotech
• Why is Luigi Mangjone being seen as courageous if he was too cowardly to look his victim in the eyes? Don't Hollywood heroes look their victims in the eyes when shooting/stabbing/choking them?
• Review: Genki Attack Vector - A Modular Switch 2 Case Which Opts For Comfort Over Protection - Nintendo Life
• Oil prices jump more than 3%, adding to last week's surge, as Israel strikes Iran energy facilities - CNBC